Questions on Algebra: Systems of Linear Equations answered by real tutors!

Tutors Answer Your Questions about Linear-systems (FREE)

Question 562463: 2x+y=5 In this I do not understand how to get 5 on the other side and y by itself.
Click here to see answer by MathHelper7(6)

Question 563056: The sum of the digits of a certain two-digit number is 7. Reversing its digits increases the number by 9. What is the number?

I do understand systems of equations. And although it appears quite simple, I can't understand how my second equation should be set up. So far I have: x + y = 7
but I don't know how to mathematically express the term "reversing it's digits". FYI, the answer is 34.
Click here to see answer by htmentor(1343)

Question 563174: 6x+5y=4
6x-7y=-20
solve each system using the substitution or elimination method
Click here to see answer by Alan3354(69443)

Question 563169: solve each systm of equation using the substitution pr elimination method
x+y=-4
x-y=2
Click here to see answer by solver91311(24713)

Question 563176: solve each system using the substitution or elimination method
x-2y=6
x+y=3

Click here to see answer by Alan3354(69443)

Question 563180: solve each system using either methods substitution or elimination

2m+3n=4
-m+2n=5
Click here to see answer by stanbon(75887)

Question 563188: what is the substitution method from algebra 1 equations
p+q=-2
p-q+8
Click here to see answer by Alan3354(69443)

Question 563181: solve each system by substitution or elimination
2x+3y=6
x+2y=5
Click here to see answer by Alan3354(69443)

Question 563214: How do you solve: (4f^3g/3h^6)^3?
Click here to see answer by Alan3354(69443)

Question 563193: Solve this system of equations using substitution. Put your answer in ordered pair form, (x, y).
x + y = 15
4x + 3y = 38
Click here to see answer by Alan3354(69443)

Question 563216: X+y=0
X-2y=6
I am having trouble figuring out how to simplify the equation. I do one problem and it works, do you have any tricks to help?
Click here to see answer by Alan3354(69443)

Question 563220: {3x+5y=14
{2x-3y=-16
Click here to see answer by Alan3354(69443)

Question 563164: solve systems of equation using either methods substitution or elimination.
y=4x
3x-y=1
Click here to see answer by Alan3354(69443)

Question 563233: y=x+3
y=3+11
Click here to see answer by Alan3354(69443)

Question 563390: how do you show the equation of a line that passes through point (0, b)and (1,b + m)is y=mx+b and how do you explain that point (-1, b -m) also is on the line?
(linear equations in slope intercept from)
Click here to see answer by mananth(16946)

Question 563494: x+2y=0
3x+4y=4
Click here to see answer by Maths68(1474)

Question 563492: x=2y
y=x-2
Click here to see answer by Maths68(1474)

Question 563666: Solve by the elimination method
5x+3y=-7
7x-2y=13

Click here to see answer by jim_thompson5910(35256)

Question 563749: solve the system of equation in ordered pairs.
63x-9y=351
-8x+9y=-21
Click here to see answer by Alan3354(69443)

Question 563858: Can you please tell me if when solving the linear equation : 7|5x|+2=6 , if I must divide by 7 after subtracting the 2 from both sides of the ='s sign? Thanks, my email is thissucks2008@live.com
Click here to see answer by mananth(16946)

Question 564073: 5x - 15y + z = 22
-10x + 12y � 2z = -8
4x � 2y � 3z = 9
Help me solve this problem
Click here to see answer by mananth(16946)

Question 564137: solve this system using substitution . show work
x+y=-4
x-y=2
Click here to see answer by mananth(16946)

Question 564169: 8x - (6x + 5) = 11

Click here to see answer by striker1997(2)

Question 564320: how do you do this equation by elimination?
y=3x+17
y=-2x-8

Click here to see answer by Alan3354(69443)

Question 564462: Please solve the following system of linear equations with substitution.
3x-2=y
y-2x=-5
Click here to see answer by ankor@dixie-net.com(22740)

Question 565025: I have no clue how to solve Systems of Equations!!!??? HELP EX: y=3x+6
y=x+2
Any Suggetions??
Click here to see answer by ankor@dixie-net.com(22740)

Question 565125: 2x - y = 10
4x - 2y = 7
I am supposed to use elimination, when i tried it several times i kept ending up with this:
-4x + 2y = -20
4x - 2y = 7
This would cancel both the 4x's and 2y's.
Click here to see answer by jim_thompson5910(35256)

Question 565159: I was asked to solve a system of equations, and I got the problem:
x=-4y
3x+2y=20
I substituted -4y for x and got -12y+2y=20 or 14y=20 and I don't know if I did the problem right so far, and if I did, how to finish solving.
Click here to see answer by jim_thompson5910(35256)

Question 565164: What is X= -Y
2Y-3x=25
Click here to see answer by mananth(16946)

Question 565304: Is (8, -1) a solution of the system, 2x + 3y = 13 and x - y = 9?
yes or no
Click here to see answer by mananth(16946)

Question 565310:
Graph the two equations to solve the system. What is the ordered pair solution?
x + y = 6 and x - y = 4

(4, 2)

(6, 2)

(5, 1)

no solution
Click here to see answer by mananth(16946)

Question 565308: Is (-2, -5) a solution of the system, 3x + 2y = 4 and 2x - 5y = -29?
yes or no ?
Click here to see answer by mananth(16946)

Question 565337: 5(4-x)+(7+x)=47
Click here to see answer by Tias_411(14)

Question 565302: I need help with a word problem, I have a way to find the solution but it is not the way we were instructed.Below, is a copy of the word problem.
You plant a 14 inch hemlock tree that grows at a rate of 4 inches per year.You also plant a 8 inch spruce that grows at a rate of 6 inches per year.In how many years will both trees be the same height, and how tall will they be.
I am not requesting the answer, I just need a linear system to solve.
The way I found how to solve but isn't the way instructed is:
14+4x=y
8+6x=y
I would have to do that equation over and over again to find the correct answer. My teacher would be displeased if I had not used the way instructed.I struggle with word problems and I am going to stay after school to get help.
Click here to see answer by ankor@dixie-net.com(22740)

Question 565396: is this linear 5=8-3y
Click here to see answer by stanbon(75887)

Question 565474: Can you solve the linear system by using the substitution method and showing details please. Thank you
3x+4y=-3
2x+y=8
Click here to see answer by scott8148(6628)

Question 565207: What is 3x + Y=5
Y=x-7? And how do you work it out
Click here to see answer by scott8148(6628)

Question 565518: -5X+25=-55
Click here to see answer by Leaf W.(135)

Question 565660: OK I have been stumped on this and skipped it but can you do it and see my answer matches because there is not a selection for mine. HERE IT IS---- (An algebra teacher drove by a farmyard full of chickens and pigs. The teacher happened to notice that there were a total of 100 heads and 270 legs. How many chickens were there? How many pigs were there?)
Click here to see answer by Alan3354(69443)

Question 565833: 2x+3y=26
1x+8y=14
Click here to see answer by mananth(16946)

Question 565834: 3x/4 = 27
the reason I am confused is because the fraction usually has the x right in the middle of 3/4 but this time the x is on the top section of the fraction next to the 3.

thanks for your help
Click here to see answer by ankor@dixie-net.com(22740)

Question 565863: 3x-10y=-25
4x+40y=-5
how do you solve these by elimination?
Click here to see answer by solver91311(24713)

Question 566125: May you help me solve this problem below...

What is the y-intercept of -6x - 1/3y = 6
i got -2 but im not sure if thats correct.
Click here to see answer by TutorDelphia(193)

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