Questions on Algebra: Equations answered by real tutors!

Tutors Answer Your Questions about Equations (FREE)

Question 620648: Solve the following equation:
- 9/7 x = 27 or negative 9/7x = 27
Click here to see answer by solver91311(24713)

Question 620872: Simplify: 3/[(1/a) + (1/b)]

Click here to see answer by ewatrrr(24785)

Question 620873: Solve for n: n/(n-2) = 6/5
Click here to see answer by ewatrrr(24785)

Question 620849: The value, v, in the hundreds of dollars, of Bob's stamp collection is 12 dollars more than 1/3 of the age, t(in years).
Graph the equation and use the graph to determine the value of Bob's collection if it is 9 years old.
Click here to see answer by math-vortex(648)

Question 620908: My question is: 5x+14=6x+2. Please can you show me all the steps? Thank you

Click here to see answer by solver91311(24713)

Question 620916: if 10=c+d
c is one more than d
then what is the value of c?
Click here to see answer by solver91311(24713)

Question 620939: Help me solve 3(x-1)-5x = 12-(6x-7)
Click here to see answer by jim_thompson5910(35256)

Question 620975: I need to solve this problem for "a"
2a-b=ac+3b
Thanks!
Click here to see answer by jim_thompson5910(35256)

Question 620975: I need to solve this problem for "a"
2a-b=ac+3b
Thanks!
Click here to see answer by solver91311(24713)

Question 621040: I know this should be basic, but I need help proving that this answer is true. I have the equation [(1+sqrt5)/(2sqrt5)] - [(1-sqrt5)/(2sqrt5)] = 1. I know the answer is 1, but when I try to work it out, I keep getting an answer of zero. Please help me fix my algebra mistakes so the answer on the left becomes 1.
Click here to see answer by fcabanski(1391)

Question 621081: What is the quotient if 16 is divided by 2/3
Click here to see answer by vleith(2983)

Question 621200: how do you solve T=4500+12y ?
Click here to see answer by Alan3354(69443)

Question 621208: Solve each equation:
4x+3(x-2)=18-x
Need help please step by step to solve equation the answer
Click here to see answer by josmiceli(19441)

Question 621386: What is the equation of the line containing the point (6,2) and parallel to the line 3x+7y=70?
Click here to see answer by Emsley(35)

Question 621415: How many is 10 to the power of 127?
Click here to see answer by Alan3354(69443)

Question 621426: use method of substitution to solve the system of linear equations
1. 4a= 6 - b
+6 = +6
4a+6=b (stuck from here)

2 4a= 5 - b

Click here to see answer by Alan3354(69443)

Question 621446: Please help with this problem:
Find the x- and y- intercepts and graph the equation plotting the intercepts.
-2x+7y=-7
Show all work and graph
Thank you,
Janice

Click here to see answer by ewatrrr(24785)

Question 621570: Lydia decides to mix grades of gasoline in her truck. She puts in 6 gallons of regular and 9 gallons of premium for a total cost of $56.64. If premium gasoline costs $0.21 more per gallon than regular, what was the price of each grade of gasoline?
Click here to see answer by dragonwalker(73)

Question 621512: The perimeter of a rectangle in 42m. The length of the rectangle is3m less than twice the width. Find the length and width of the rectangle.

Click here to see answer by math-vortex(648)

Question 621682: Write an algebraic equation for the following: The quotient of 3 and 8 is the same as t plus 5.

Click here to see answer by ewatrrr(24785)

Question 621705:
Click here to see answer by ewatrrr(24785)

Question 621707: Determine whether each pair of equations represents perpendicular lines.
y=5-3x, 3x-y=8
Thank you,
Janice
Click here to see answer by ewatrrr(24785)

Question 621707: Determine whether each pair of equations represents perpendicular lines.
y=5-3x, 3x-y=8
Thank you,
Janice
Click here to see answer by tutor_paul(519)

Question 621707: Determine whether each pair of equations represents perpendicular lines.
y=5-3x, 3x-y=8
Thank you,
Janice
Click here to see answer by josmiceli(19441)

Question 621689: how do you simplify 4x-5x+7x
Click here to see answer by lynnlo(4176)

Question 621729: If 2x � 9 = 4x + 7, then what does x equal?
Click here to see answer by tutor_paul(519)

Question 621729: If 2x � 9 = 4x + 7, then what does x equal?
Click here to see answer by ewatrrr(24785)

Question 621771: I need help solving an equation. -4(4- 11)-34=10- 12
Click here to see answer by Alan3354(69443)

Question 621772: Sorry -4(x- 11)-34=10-12 could you show how you solved this?

Click here to see answer by Alan3354(69443)

Question 621648: The slope of a line is 2 and the point (5, 8) is on the line. Express the line in slope-interceThe slope of a line is 2 and the point (5, 8) is on the line. Express the line in slope-intercept formpt form
Click here to see answer by Alan3354(69443)

Question 621802: 5x+12-4x-14=22
9x+12-14=22
9x+-2=22
+2=+2
9x=24
9x/3=24/3
x=3 but I'm thinking this is wrong?
Click here to see answer by Alan3354(69443)

Question 621795: I am having problems figuring out 5x+12-4x-14=22 could you help and show how you get the answer.
Click here to see answer by Alan3354(69443)

Question 622044: If Lea is 6 years older than Sue, and John is 5 years older than Leah, and the total of their ages is 41. How old is Sue?
Click here to see answer by ewatrrr(24785)

Question 622044: If Lea is 6 years older than Sue, and John is 5 years older than Leah, and the total of their ages is 41. How old is Sue?
Click here to see answer by jessica43(140)

Question 622109: Arif walks for x hours at 5km/h and runs for y hours at 10km/h. He travels a total of 35km and his average speed is 7km/h. Find the value of x and y.
I have worked out that distance divided by speed = time which is 5 hours but got stuck from there - not sure how to divide the walking and running so that the average speed = 7km/h.
Thanks in advance.
Click here to see answer by Alan3354(69443)

Question 622204:
can anyone help me factor this? with step by step explanation? thanks!
Click here to see answer by solver91311(24713)

Question 622204:
can anyone help me factor this? with step by step explanation? thanks!
Click here to see answer by matineesuxxx(27)

Question 622156: , where -1<2x<1, , where -1<3y<1 and 3y+2x=1, prove that ab=a+b
Click here to see answer by Edwin McCravy(20054)

Question 622146: How to simplify the following
(i) 3x(6)-2(x-1)
(ii) 1/3x -6x
Click here to see answer by lynnlo(4176)

Question 622182: 3m/8=-24
Click here to see answer by lynnlo(4176)

Question 622185: x+15/x-3 = -1/2
Click here to see answer by lynnlo(4176)

Question 622211: 3x-11=-x+5?
7+3(2x-4=11x
10-3(x-4)=11x+6
x+5-3x-50
Click here to see answer by lynnlo(4176)

Question 622262: What is 4x^2+25y^2=100 in y^2 isolated form?
Click here to see answer by math-vortex(648)

Question 622274: Show that 3/(x-5) - 1/(x+1) = 2x+8/(x-5)(x+1)
Click here to see answer by ewatrrr(24785)

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, 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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, 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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, 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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