Questions on Algebra: Equations answered by real tutors!

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Question 373980: Soluve using the multiplication principle first. Then use the elimination method:
7p+5q=2
8p-9q=17
I know a common number needs to be found but how do I choose which one?
Thanks!
Click here to see answer by Alan3354(69443) About Me 
Question 374059: Hello,
Please help me understand how to solve this problem, thanking you advance.
f(x) = 1 + 19x * x
x = 5
x = -2
Click here to see answer by jim_thompson5910(35256) About Me 
Question 374076: hi can you help me solve this twp step equation: t/7 -5 =-10
Click here to see answer by checkley79(3341) About Me 
Question 374082: hi can you help me solve this twp step equation: a/2 -14=-27
Click here to see answer by jim_thompson5910(35256) About Me 
Question 374082: hi can you help me solve this twp step equation: a/2 -14=-27
Click here to see answer by mananth(16946) About Me 
Question 374057: Label the following as an expression, a linear equation or an equation that is not linear:
Click here to see answer by checkley79(3341) About Me 
Question 374078: hi can you help me solve this twp step equation: 2+k/5 =10
Click here to see answer by mananth(16946) About Me 
Question 374077: hi can you help me solve this twp step equation:7=y/8 +-9
Click here to see answer by mananth(16946) About Me 
Question 374074: hi, can you help me solve this twp step equation: 16n+2= -46
Click here to see answer by mananth(16946) About Me 
Question 374073: hi can you help me solve this twp step equation:4p+5=25
Click here to see answer by mananth(16946) About Me 
Question 374072: hi can you help me solve this twp step equation: n/3 +6= 22
Click here to see answer by mananth(16946) About Me 
Question 374071: hi can you help me solve this twp step equation: 3a-4=-16
Click here to see answer by mananth(16946) About Me 
Question 374070: hi can you help me solve this twp step equation: t/7+4=9
Click here to see answer by mananth(16946) About Me 
Question 374069: hi can you help me answer this two- step equation : x/6-2=4
Click here to see answer by mananth(16946) About Me 
Question 374035: Solve the following inequality: -5(3-x)less than or equal to -9x -8
Click here to see answer by checkley79(3341) About Me 
Question 374062: first - x + y = 4
second - 2x-y = 5

Click here to see answer by jokaehler(26) About Me 
Question 374129: Matt boasted about the size of the marlin he caught. "The head alone was 14 inches! The tail was the size of the head and half the body. The body was as long as the tail and head combined." What was the size of Matt's marlin?
Click here to see answer by edjones(8007) About Me 
Question 374203: Can you please help me solve this equation for zeros?
x^2– 3x – 12 = 0
Click here to see answer by Fombitz(32388) About Me 
Question 374211: Solve for w: w/4 + w/3 = 28
Click here to see answer by amoresroy(361) About Me 
Question 374239: Q # 1 x + y = 4 (1)
2x-y = 5 (2)

Click here to see answer by robertb(5830) About Me 
Question 374105: Translate the following statement into an algebraic equation. Let x represent the number: 6 times a number is 14 more than that number
Click here to see answer by robertb(5830) About Me 
Question 374253: Find the Greatest Common Factor of the exponential expressions below.
18x^3 and 30x^5
Thanks!<3
Click here to see answer by user_dude2008(1862) About Me 
Question 27811: 1.2x-10+13+1=5x+11
2.8x/3-3=2x/3+15
3.12x/5+5=29-3x/5
4.2x/5-2=12x/5+11
5.3x/7-4=24x/7+8
Click here to see answer by ali.m(1) About Me 
Question 374484: I have several problems if you may help with. The following equations, I have to solve for x. And I cant remember the steps ,I am totally lost.
1.) 17x - 42 = -39
2.) 7x - 2 = 5x + 10
3.) 3x - 1 - x = 3x + 5
4.) -4(x + 7)= -16
5.) 5(x + 3) = 7(x - 5)
Click here to see answer by jim_thompson5910(35256) About Me 
Question 374494: http://oi53.tinypic.com/a5bzpc.jpg <-- This is the 5step guide
http://oi51.tinypic.com/30jtohz.jpg <-- this is the question.
I need to see how to solve it Plus answer.
Good solution for how I got the answer.
Also I have another problem that is..
The positive numbers, the negative numbers, and zero make up the ________ Numbers.
Click here to see answer by jim_thompson5910(35256) About Me 
Question 374499: how do so solve x^2-81=0 using the quadratic formula?
Click here to see answer by jim_thompson5910(35256) About Me 
Question 374503: Could someone help me with these problems? I have to solve for x and I do not know how or remember the steps. The brackets especially throw me off. Thank you so much.

3.) 3x - 1 - x = 3x + 5
4.) -4(x + 7)= -16
5.) 5(x + 3) = 7(x - 5)
Click here to see answer by jim_thompson5910(35256) About Me 
Question 374571: suppose F(X)=AX+B, G(X)=BX+A,(A AND B INTEGERS), F(1)= 8, F(G(50))-G(F(50))=28 FIND THE PRODUCT OF A AND B.

Click here to see answer by robertb(5830) About Me 
Question 374531: Hi there could you help me with a problem? I would appreciate your help. I must solve for X. It seems easy I think the answer would be 12 but I need to know the steps. Thank you.
2x + 4 =28
Click here to see answer by Alan3354(69443) About Me 
Question 374754: Hello, I recently took an assessment and now I'm doing a test revision. This is one of the problems I got wrong:
6(2y+5)-4(y-3)=7
Can you help me solve the equation for y? I tried and got 25 over 8 (as in a fraction), but I don't remember what I did, because the test was almost 3 weeks ago.
Thanks in advance.
Click here to see answer by jim_thompson5910(35256) About Me 
Question 374776: Hi, this should be just about the last question I'm going to ask. It is a word problem:
"Jacob attempted to solve for x in the equation 7(x+5)=3(x-8) using the steps below:
Step 1: 7x+35=3x-24
Step 2: 4x+35= -24
Step 3: 4x=11
Step 4: x=7"
Can you help me identify which is the first incorrect step? Thanks for the help!
Click here to see answer by jim_thompson5910(35256) About Me 
Question 374776: Hi, this should be just about the last question I'm going to ask. It is a word problem:
"Jacob attempted to solve for x in the equation 7(x+5)=3(x-8) using the steps below:
Step 1: 7x+35=3x-24
Step 2: 4x+35= -24
Step 3: 4x=11
Step 4: x=7"
Can you help me identify which is the first incorrect step? Thanks for the help!
Click here to see answer by mananth(16946) About Me 
Question 374860: Simplify the expression.
3z/4 divided by 5z/7

Click here to see answer by Fombitz(32388) About Me 
Question 374927: rewrite the expression as a single fraction in lowest terms.


x + 1 / x-1 - 1/(x-1)^2
I got x^3-2x^2+2x-2/(x-1)^2
Click here to see answer by Fombitz(32388) About Me 
Question 375023: 8.5+6.6+5=
Click here to see answer by Fombitz(32388) About Me 
Question 375083: (y-4)+(3 divided by 1)^2 +6
___________________________ +2y-3 = 2^2 +6y-3+2y
(3-1)^2 +6

My son got this math problem for homework. I am a second grade teacher and this is way over my level!! My husband, the "math genious" is out of town right now, and this is due tomorrow (Tues. Nov. 23)!! Please help!
Click here to see answer by solver91311(24713) About Me 
Question 375290: 7/x^2-x-2 + 1/x+1 = 3/x-2
Click here to see answer by mananth(16946) About Me 
Question 375245: Solve for the variable (Solving first-degree equations)
x-3/8 + 5/6 = 2x/3 - 4/3
Click here to see answer by Fombitz(32388) About Me 
Question 375348: write an equation to model the following situation. A candle is 7 in. tall and burns at the rate of 2.00 in/h
Click here to see answer by Fombitz(32388) About Me 
Question 375334: Marta bought two skirts and a blouse for $ 80.00. The shirt cost $ 5.00 more than each of the skirts, which were purchased for the same price. How much she paid for the blouse and a skirt?
Click here to see answer by ewatrrr(24785) About Me 
Question 375426: How many real solutions does the following problem have?
Log(4x^2+4x+101)=2
Click here to see answer by Fombitz(32388) About Me 
Question 375426: How many real solutions does the following problem have?
Log(4x^2+4x+101)=2
Click here to see answer by ewatrrr(24785) About Me 
Question 375339: a) {x + 3y = 42
{ x = 4y
_________________
b) { x + 16y = 24
{2x - 16y = 12
_________________
c) {4x + y = 10
{5x - 3y = 9
_________________
d) {3x + 5y = 1
{6x + 3y = 2
_________________
e) { 4p - 3q = 9
{ -3p + 2q = -5
_________________
f) {3c + 12d = 4
{2c + 8d = -3
_________________
g) {5x + 4 (y - 5) = x + 8
(x = 2 (y+1) - 4
_________________
h) {y = 2x + y
{ y = -3x + 1
Click here to see answer by edjones(8007) About Me 
Question 375450: 7x-1= 5x
Click here to see answer by rfer(16322) About Me 
Question 374977: Hello, i need help on solving this equation. I dont even know where to start.
t-2/t-1= t+17/t^(2)-1 - 1/t+1
Im kind of new at this but the problem is read: t minus 2 over t minus 1 equals t plus 17 over t squared minus 1 over t plus one.
Click here to see answer by ankor@dixie-net.com(22740) About Me 
Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760, 5761..5805, 5806..5850, 5851..5895, 5896..5940, 5941..5985, 5986..6030, 6031..6075, 6076..6120, 6121..6165, 6166..6210, 6211..6255, 6256..6300, 6301..6345, 6346..6390, 6391..6435, 6436..6480, 6481..6525, 6526..6570, 6571..6615, 6616..6660, 6661..6705, 6706..6750, 6751..6795, 6796..6840, 6841..6885, 6886..6930, 6931..6975, 6976..7020, 7021..7065, 7066..7110, 7111..7155, 7156..7200, 7201..7245, 7246..7290, 7291..7335, 7336..7380, 7381..7425, 7426..7470, 7471..7515, 7516..7560, 7561..7605, 7606..7650, 7651..7695, 7696..7740, 7741..7785, 7786..7830, 7831..7875, 7876..7920, 7921..7965, 7966..8010, 8011..8055, 8056..8100, 8101..8145, 8146..8190, 8191..8235, 8236..8280, 8281..8325, 8326..8370, 8371..8415, 8416..8460, 8461..8505, 8506..8550, 8551..8595, 8596..8640, 8641..8685, 8686..8730, 8731..8775, 8776..8820, 8821..8865, 8866..8910, 8911..8955, 8956..9000, 9001..9045, 9046..9090, 9091..9135, 9136..9180, 9181..9225, 9226..9270, 9271..9315, 9316..9360, 9361..9405, 9406..9450, 9451..9495, 9496..9540, 9541..9585, 9586..9630, 9631..9675, 9676..9720, 9721..9765, 9766..9810, 9811..9855, 9856..9900, 9901..9945, 9946..9990, 9991..10035, 10036..10080, 10081..10125, 10126..10170, 10171..10215, 10216..10260, 10261..10305, 10306..10350, 10351..10395, 10396..10440, 10441..10485, 10486..10530, 10531..10575, 10576..10620, 10621..10665, 10666..10710, 10711..10755, 10756..10800, 10801..10845, 10846..10890, 10891..10935, 10936..10980, 10981..11025, 11026..11070, 11071..11115, 11116..11160, 11161..11205, 11206..11250, 11251..11295, 11296..11340, 11341..11385, 11386..11430, 11431..11475, 11476..11520, 11521..11565, 11566..11610, 11611..11655, 11656..11700, 11701..11745, 11746..11790, 11791..11835, 11836..11880, 11881..11925, 11926..11970, 11971..12015, 12016..12060, 12061..12105, 12106..12150, 12151..12195, 12196..12240, 12241..12285, 12286..12330, 12331..12375, 12376..12420, 12421..12465, 12466..12510, 12511..12555, 12556..12600, 12601..12645, 12646..12690, 12691..12735, 12736..12780, 12781..12825, 12826..12870, 12871..12915, 12916..12960, 12961..13005, 13006..13050, 13051..13095, 13096..13140, 13141..13185, 13186..13230, 13231..13275, 13276..13320, 13321..13365, 13366..13410, 13411..13455, 13456..13500, 13501..13545, 13546..13590, 13591..13635, 13636..13680, 13681..13725, 13726..13770, 13771..13815, 13816..13860, 13861..13905, 13906..13950, 13951..13995, 13996..14040, 14041..14085, 14086..14130, 14131..14175, 14176..14220, 14221..14265, 14266..14310, 14311..14355, 14356..14400, 14401..14445, 14446..14490, 14491..14535, 14536..14580, 14581..14625, 14626..14670, 14671..14715, 14716..14760, 14761..14805, 14806..14850, 14851..14895, 14896..14940, 14941..14985, 14986..15030, 15031..15075, 15076..15120, 15121..15165, 15166..15210, 15211..15255, 15256..15300, 15301..15345, 15346..15390, 15391..15435, 15436..15480, 15481..15525, 15526..15570, 15571..15615, 15616..15660, 15661..15705, 15706..15750, 15751..15795, 15796..15840, 15841..15885, 15886..15930, 15931..15975, 15976..16020, 16021..16065, 16066..16110, 16111..16155, 16156..16200, 16201..16245, 16246..16290, 16291..16335, 16336..16380, 16381..16425, 16426..16470, 16471..16515, 16516..16560, 16561..16605, 16606..16650, 16651..16695, 16696..16740, 16741..16785, 16786..16830, 16831..16875, 16876..16920, 16921..16965, 16966..17010, 17011..17055, 17056..17100, 17101..17145, 17146..17190, 17191..17235, 17236..17280, 17281..17325, 17326..17370, 17371..17415, 17416..17460, 17461..17505, 17506..17550, 17551..17595, 17596..17640, 17641..17685, 17686..17730, 17731..17775, 17776..17820, 17821..17865, 17866..17910, 17911..17955, 17956..18000, 18001..18045, 18046..18090, 18091..18135, 18136..18180, 18181..18225, 18226..18270, 18271..18315, 18316..18360, 18361..18405, 18406..18450, 18451..18495, 18496..18540, 18541..18585, 18586..18630, 18631..18675, 18676..18720, 18721..18765, 18766..18810, 18811..18855, 18856..18900, 18901..18945, 18946..18990, 18991..19035, 19036..19080, 19081..19125, 19126..19170, 19171..19215, 19216..19260, 19261..19305, 19306..19350, 19351..19395, 19396..19440, 19441..19485, 19486..19530, 19531..19575, 19576..19620, 19621..19665, 19666..19710, 19711..19755, 19756..19800, 19801..19845, 19846..19890, 19891..19935, 19936..19980, 19981..20025, 20026..20070, 20071..20115, 20116..20160, 20161..20205, 20206..20250, 20251..20295, 20296..20340, 20341..20385, 20386..20430, 20431..20475, 20476..20520, 20521..20565, 20566..20610, 20611..20655, 20656..20700, 20701..20745, 20746..20790, 20791..20835, 20836..20880, 20881..20925, 20926..20970, 20971..21015, 21016..21060, 21061..21105, 21106..21150, 21151..21195, 21196..21240, 21241..21285, 21286..21330, 21331..21375, 21376..21420, 21421..21465, 21466..21510, 21511..21555, 21556..21600, 21601..21645, 21646..21690, 21691..21735, 21736..21780, 21781..21825, 21826..21870, 21871..21915, 21916..21960, 21961..22005, 22006..22050, 22051..22095, 22096..22140, 22141..22185, 22186..22230, 22231..22275, 22276..22320, 22321..22365, 22366..22410, 22411..22455, 22456..22500, 22501..22545, 22546..22590, 22591..22635, 22636..22680, 22681..22725, 22726..22770, 22771..22815, 22816..22860, 22861..22905, 22906..22950, 22951..22995, 22996..23040, 23041..23085, 23086..23130, 23131..23175, 23176..23220, 23221..23265, 23266..23310, 23311..23355, 23356..23400, 23401..23445, 23446..23490, 23491..23535, 23536..23580, 23581..23625, 23626..23670, 23671..23715, 23716..23760, 23761..23805, 23806..23850, 23851..23895, 23896..23940, 23941..23985, 23986..24030, 24031..24075, 24076..24120, 24121..24165, 24166..24210, 24211..24255, 24256..24300, 24301..24345, 24346..24390, 24391..24435, 24436..24480, 24481..24525, 24526..24570, 24571..24615, 24616..24660, 24661..24705, 24706..24750, 24751..24795, 24796..24840, 24841..24885, 24886..24930, 24931..24975, 24976..25020, 25021..25065, 25066..25110, 25111..25155, 25156..25200, 25201..25245, 25246..25290, 25291..25335, 25336..25380, 25381..25425, 25426..25470, 25471..25515, 25516..25560, 25561..25605, 25606..25650, 25651..25695, 25696..25740, 25741..25785, 25786..25830, 25831..25875, 25876..25920, 25921..25965, 25966..26010, 26011..26055, 26056..26100, 26101..26145, 26146..26190, 26191..26235, 26236..26280, 26281..26325, 26326..26370, 26371..26415, 26416..26460, 26461..26505, 26506..26550, 26551..26595, 26596..26640, 26641..26685, 26686..26730, 26731..26775, 26776..26820, 26821..26865, 26866..26910, 26911..26955, 26956..27000, 27001..27045, 27046..27090, 27091..27135, 27136..27180, 27181..27225, 27226..27270, 27271..27315, 27316..27360, 27361..27405, 27406..27450, 27451..27495, 27496..27540, 27541..27585, 27586..27630, 27631..27675, 27676..27720, 27721..27765, 27766..27810, 27811..27855, 27856..27900, 27901..27945, 27946..27990, 27991..28035, 28036..28080, 28081..28125, 28126..28170, 28171..28215, 28216..28260, 28261..28305, 28306..28350, 28351..28395, 28396..28440, 28441..28485, 28486..28530, 28531..28575, 28576..28620, 28621..28665, 28666..28710, 28711..28755, 28756..28800, 28801..28845, 28846..28890, 28891..28935, 28936..28980, 28981..29025, 29026..29070, 29071..29115, 29116..29160, 29161..29205, 29206..29250, 29251..29295, 29296..29340, 29341..29385, 29386..29430, 29431..29475, 29476..29520, 29521..29565, 29566..29610, 29611..29655, 29656..29700, 29701..29745, 29746..29790, 29791..29835, 29836..29880, 29881..29925, 29926..29970, 29971..30015, 30016..30060, 30061..30105, 30106..30150, 30151..30195, 30196..30240, 30241..30285, 30286..30330, 30331..30375, 30376..30420, 30421..30465, 30466..30510, 30511..30555, 30556..30600, 30601..30645, 30646..30690, 30691..30735, 30736..30780, 30781..30825, 30826..30870, 30871..30915, 30916..30960, 30961..31005, 31006..31050, 31051..31095, 31096..31140, 31141..31185, 31186..31230, 31231..31275, 31276..31320, 31321..31365, 31366..31410, 31411..31455, 31456..31500, 31501..31545, 31546..31590, 31591..31635, 31636..31680, 31681..31725, 31726..31770, 31771..31815, 31816..31860, 31861..31905, 31906..31950, 31951..31995, 31996..32040, 32041..32085, 32086..32130, 32131..32175, 32176..32220, 32221..32265, 32266..32310, 32311..32355, 32356..32400, 32401..32445, 32446..32490, 32491..32535, 32536..32580, 32581..32625, 32626..32670, 32671..32715, 32716..32760, 32761..32805, 32806..32850, 32851..32895, 32896..32940, 32941..32985, 32986..33030, 33031..33075, 33076..33120, 33121..33165, 33166..33210, 33211..33255, 33256..33300, 33301..33345, 33346..33390, 33391..33435, 33436..33480, 33481..33525, 33526..33570, 33571..33615, 33616..33660, 33661..33705, 33706..33750, 33751..33795, 33796..33840, 33841..33885, 33886..33930, 33931..33975, 33976..34020, 34021..34065, 34066..34110, 34111..34155, 34156..34200, 34201..34245, 34246..34290, 34291..34335, 34336..34380, 34381..34425, 34426..34470, 34471..34515, 34516..34560, 34561..34605, 34606..34650, 34651..34695, 34696..34740, 34741..34785, 34786..34830, 34831..34875, 34876..34920, 34921..34965, 34966..35010, 35011..35055, 35056..35100, 35101..35145, 35146..35190, 35191..35235, 35236..35280, 35281..35325, 35326..35370, 35371..35415, 35416..35460, 35461..35505, 35506..35550, 35551..35595, 35596..35640, 35641..35685, 35686..35730, 35731..35775, 35776..35820, 35821..35865, 35866..35910, 35911..35955, 35956..36000, 36001..36045, 36046..36090, 36091..36135, 36136..36180, 36181..36225, 36226..36270, 36271..36315, 36316..36360, 36361..36405, 36406..36450, 36451..36495, 36496..36540, 36541..36585, 36586..36630, 36631..36675, 36676..36720, 36721..36765, 36766..36810, 36811..36855, 36856..36900, 36901..36945, 36946..36990, 36991..37035, 37036..37080, 37081..37125, 37126..37170, 37171..37215, 37216..37260, 37261..37305, 37306..37350, 37351..37395, 37396..37440, 37441..37485, 37486..37530, 37531..37575, 37576..37620, 37621..37665, 37666..37710, 37711..37755, 37756..37800, 37801..37845, 37846..37890, 37891..37935, 37936..37980, 37981..38025, 38026..38070, 38071..38115, 38116..38160, 38161..38205, 38206..38250, 38251..38295, 38296..38340, 38341..38385, 38386..38430, 38431..38475, 38476..38520, 38521..38565, 38566..38610, 38611..38655, 38656..38700, 38701..38745, 38746..38790, 38791..38835, 38836..38880, 38881..38925, 38926..38970, 38971..39015, 39016..39060, 39061..39105, 39106..39150, 39151..39195, 39196..39240, 39241..39285, 39286..39330, 39331..39375, 39376..39420, 39421..39465, 39466..39510, 39511..39555, 39556..39600, 39601..39645, 39646..39690, 39691..39735, 39736..39780, 39781..39825, 39826..39870, 39871..39915, 39916..39960, 39961..40005, 40006..40050, 40051..40095, 40096..40140, 40141..40185, 40186..40230, 40231..40275, 40276..40320, 40321..40365, 40366..40410, 40411..40455, 40456..40500, 40501..40545, 40546..40590, 40591..40635, 40636..40680, 40681..40725, 40726..40770, 40771..40815, 40816..40860, 40861..40905, 40906..40950, 40951..40995, 40996..41040, 41041..41085, 41086..41130, 41131..41175, 41176..41220, 41221..41265, 41266..41310, 41311..41355, 41356..41400, 41401..41445, 41446..41490, 41491..41535, 41536..41580