# solve by the substitution method 5x+7y=6 -6x+y=21

29,281 questions-
## Algebra PLEASE HELP!!

What advantages does the method of substitution have over graphing for solving systems of equations? Choose the correct answer below. A. Graphing cannot be used to solve dependent or inconsistent systems due to the nature of the lines involved.

*asked by zwgz123 on December 15, 2017* -
## Linear Equations

Can you please help solve this equation using the substitution method? I have tried and keep getting that X and Y = 7/2, but the answer in the book states no solution, inconsistent system. What am I doing wrong? Please help! Solve the systems of equations

*asked by Mia on March 2, 2010* -
## Substitution Method-Plz help

Use the Substitution method to solve the system of equations. x + y = -4 x - y = 2 solve for x in the second equation. x= y+2 Put that in for x in the first equation: x+y=-4 (y+2) + y = -4 solve for y. Then, x= y+2 i don't get it.How did you get that?What

*asked by Svetlana on October 17, 2006* -
## Algebra 1

bobpursey, In this problem you helped me with earlier: Solve using any appropriate method. y = 2× - 5, y = ½× + 1 Substitution, substitute for y. 2×-5=½ × + 1 3/2 x=6 x=4 y= 2*4-5=3 How did you choose which method you were going to use between

*asked by slomo on January 3, 2015* -
## Math

17) solve this linear system using the method of substitution. 2y-x=-10 y= -3/2x-1 20) simplify then solve by substitution 2(x-4)+y=6 3x-2(y-3)=13 just need help with these 2.

*asked by Ma names Jeff on February 27, 2016* -
## math ALGEBRA

Solve by either the substitution method or the addition or subtraction method 2m=n-3 3m=2n-9 Just replace n with (2m + 3) in the second equation. Then solve for m. Once you know the value of m, use either of your equations, such as n = 2m+3, to get n.

*asked by DANIELLE on December 21, 2006* -
## algebra

Solve by elimination method. 2r-5s=-33 5r+2s=48 Solve by substitution method. 5x+6y=5 x-9y=40 I always get these two confused... can someone please help me with these two problems?? I would really appreciate it..

*asked by Anonymous on November 11, 2009* -
## math

Solve by elimination method. 2r-5s=-33 5r+2s=48 Solve by substitution method. 5x+6y=5 x-9y=40 I always get these two confused... can someone please help me with these two problems?? I would really appreciate it..

*asked by Amanda on November 11, 2009* -
## math

Solve by elimination method. 2r-5s=-33 5r+2s=48 Solve by substitution method. 5x+6y=5 x-9y=40 I always get these two confused... can someone please help me with these two problems?? I would really appreciate it..

*asked by Amanda on November 11, 2009* -
## algebra

Requesting help. (I must reckon, that X is a variable, and y is y-intercept) Q: Try to use the substitution method to solve the the linear system y=3x an y=3x-7. What do you notice? A) What happens when you graph it? B) Explain why there is no solution.

*asked by Michael on October 6, 2008* -
## Pre-Calc

Solve the system of equations using either the substitution method or the multiplication/addition method answer: 3x+2y=14 2x-4y=4

*asked by Anonymous on September 27, 2014* -
## Algebra II

How do you solve the linear equations x+y=5 3x-y=3 by use of the Substitution Method? (Please do not confuse with the Elimination Method)

*asked by Ashley on February 24, 2009* -
## College Algebra

Solve for elimination method,substitution method and cramer's rule for 8x - 4y + 2z =16

*asked by MJ on September 1, 2016* -
## Math

How do I solve these problems, I really need help. Solve by substitution method 6x+5y=17 x=53-8y Solve by elimination method 2x+3y=5 4x+6y=10

*asked by Amy on October 17, 2008* -
## Algebra 1 HELP PLZ!!!

Use the Substitution method to solve the system of equations. x + y = -4 x - y = 2 PLz HELP!! I'M NOT BOB BUT I CAN HELP ITS REALLY SIMPLE ALGEBRA X + Y = -4......EQN 1 X - Y = 2.....EQN 2 From EQN 2, let x = 2 + y Substitute that into EQN 1 x - y = -4

*asked by Margie on November 2, 2006* -
## Math

1. Explain the advantages and disadvantages of both the substitution method and the elimination method for solving a system. Help please. The only reasons I can think of is because in substitution it might be more difficult cause there's a possibility of

*asked by Amanda on February 18, 2008* -
## Math

I need help,my example: The sales representative say there are two floor plans available 56 total houses. Use x for floor plan 1 and y for floor plan 2 then write an equation that illistrates the situation. So I thought x+y=56, then sales rep. says there

*asked by dee on November 27, 2009* -
## math

Solve by substitution method 9x+6y=21-9x+y=35 What is the solution of the method?

*asked by micheal on June 16, 2009* -
## math

Can someone please check my work? Solve using substitution method 1. 3x+2y=12 x=52-6y answer:-40.8 I am pretty sure that one is wrong. Solve using elimination method 2. 2r-7s=-31 7r+2s=24 answer: (230/53,-468/53) 3.3x+4y=3 6x+8y=6 answer: No answer.

*asked by deedee on January 6, 2009* -
## Math

I still don't know how to directly solve this problem. Can someone guide to solve this system of equation by using the substitution method? Thanks! 1. Y=6x-5 Y=-x+9

*asked by Anonymous on January 29, 2014* -
## college algebra

please solve by method of substitution 0.3x-0.4y-0.33=0 0.1x + 0.2y -.21=0 please give all steps to solve.I think I understand the basic concept but this is little more complicated for me. Thanks in advance

*asked by Nadia on November 24, 2009* -
## CALC 2 - Partial Functions!!

How do I solve Integral of 7/(16-x^2) I know I must break down (16-x^2) into (x+4)(-x+4), but after I do that what is next? Using the method of partial fractions, convince yourself that 7/(16-x^2)= (7/8)*[1/(4+x) + 1/(4-x)] The two additive terms can be

*asked by Ace on June 13, 2007* -
## algebra

use the Substitution Method. Please give it a try. y = 3x + 4 5x + 3y = 12 Why is the substitution method preferred in this case?

*asked by Maya on April 5, 2011* -
## math substitution method

use the substitution method to solve 7x+5y=-26 x=28-6y

*asked by KiKi on March 28, 2010* -
## math help quick please

solve {y=x-7 {5x+2y=7 Use the substitution method. A.(0, −7) B.(7, 0) C.(3, −4) D.(−1, −8)

*asked by lily on February 6, 2017* -
## algebra

x+3y=-10 7x-5y=34 solve using substitution method

*asked by Anonymous on November 29, 2009* -
## Algebra

Use the method of substitution to solve this: 9x+4y=9/2 and y=2x-1

*asked by Amy on January 14, 2016* -
## algebra

how do you solve by substitution method: 2x+2y+2=-18+6y-8?

*asked by Carolyn on April 3, 2010* -
## Math

Using the Substitution method solve 7x+5y=-23 -6x+y=25

*asked by Bryant on March 21, 2010* -
## math

Solve by substitution method: 3x+8y=33 x=31-6y

*asked by anonymous on October 27, 2010* -
## algebra

solve by substitution method: 9x+7y=4 x=23-4y

*asked by Terri on November 24, 2009* -
## Algebra

Solve using substitution method 3x+8y=20 x=24-7y

*asked by Brandy on August 10, 2013* -
## Algebra

Solve by using substitution method. 1. y=3x-2, x=4

*asked by Brittany on January 22, 2009* -
## math problem

solve by substitution method 7x+8y=44 x=41-5y

*asked by Lavern on January 19, 2012* -
## Algebra

How would you solve this using substitution method y= 3 + x 2x + y = 8

*asked by Donna on February 16, 2011* -
## math

Solve. y=x−8 2x+3y=1 use the substitution method. (4, −4) (5, −3) (2, −6) (0, −8)

*asked by Jay on February 9, 2017* -
## Pre-Calculus

Use substitution method to solve. (1/2x)+(3/4y)=(-1/4) and (3/4x)-(1/4y)=1 Can you please help?

*asked by Anonymous on January 22, 2013* -
## Math question

Please help me to solve by substitution method. 7x+8y =44 x=41-5y

*asked by DJ on January 20, 2012* -
## Math

Solve using substitution method 2x-7y=-6 x=5y

*asked by Tyler on October 1, 2009* -
## Algebra

4x+y=42 6x-5y=50 Solve using the substitution method.

*asked by Jamie on February 1, 2013* -
## math

8m+n=12 m-5n=22 solve using substitution method

*asked by Anonymous on June 30, 2010* -
## Algebra

Solve using the substitution method. 0.3x+0.2y=5,0.5x+0.4y=11

*asked by sherry on March 22, 2012* -
## algebra

how do you use the substitution method to solve x + y =2 y = -2x

*asked by Jessi on April 29, 2011* -
## alg math 116

9x +3y=-51,-5x +y=39 solve using substitution method

*asked by Juan on February 1, 2010* -
## algebra

Solve by the substitution method. 2x+7y=16 x=22-7y

*asked by Christina on August 13, 2012* -
## Algebra

solve using substitution method: 4x+5y=21 x=48-6y

*asked by Regina on October 25, 2015* -
## college of the redwoods

x+9y=-42 3x+8y=-50 solve using the substitution method.

*asked by paulette on November 9, 2015* -
## math

solve using the substitution method: 8x+5y=-12 x=12-4y

*asked by josh on April 17, 2011* -
## Math 116

Solve by the substitution method. 3x+8y=57 x=67-8y

*asked by Rick on August 14, 2010* -
## Algebra 1

solve by the substitution method. 5x+9y=53 x=47-7y

*asked by Anonymous on May 1, 2011* -
## Algebra

x-2y=.9 4x-3y=13.1 Solve using the substitution method.

*asked by Jamie on February 1, 2013* -
## math - algebra

how would i solve this using the substitution method 3y=11-x 3x-y=3 thanks

*asked by paul on November 14, 2010* -
## college algerba

Solve by the substitution method: 2x - 3y = 7 y = 3x - 7

*asked by Sammy on March 30, 2008* -
## Algebra Help!!

solve using the substitution method. y= 5 - 3x 4x + y= 7

*asked by slomo on January 11, 2015* -
## Math/116 week seven

solve by the substitution method. 2m+n=1 m-9n=10

*asked by Renee on March 4, 2012* -
## Please help quick! Maths

Use substitution method to solve x-2y-5=0, 3x-5y=8

*asked by Jeconiah on August 26, 2012* -
## math

SOLVE USING SUBSTITUTION METHOD X+2Y =1 8X +6Y + 4

*asked by HELEN on March 13, 2010* -
## math

1) 6m+n=47 m-4n=12 can someone help me solve using substitution method?

*asked by Kristin on March 13, 2010* -
## Math

How do I solve this using substitution method? 7x+9y=-38 -6x+y=50

*asked by Edith on February 11, 2012* -
## Algebra

Use the substitution method to solve -x + 3y=24 5x +8y=-5

*asked by Jake on March 23, 2012* -
## College Algebra

solve by the the substitution method 8x+9y=-39

*asked by Tiffany on February 2, 2014* -
## Algebra

Please solve using substitution method. 2n-11=m/4 n=m/-3

*asked by Emily on January 29, 2015* -
## algebra

using the substitution method how do you solve y=-1/3x y+2x=5

*asked by renee on April 13, 2011* -
## Pre Calc

x^2+y=9, x-y+3=0. Need to solve using substitution method.

*asked by Keith on May 18, 2010* -
## math

solve by substitution method: 8x-3y=-94 2x+22=y

*asked by Ralph on July 24, 2011* -
## math

solve by substitution method x^2=y^2+39 x-y=3

*asked by sue on February 25, 2009* -
## math-need fast

solve by substitution method x^2=y^2+39 x-y=3

*asked by anonymous on February 26, 2009* -
## Algebra

solve using substitution method 3x-5y=61 3x-y=17

*asked by Laura on January 25, 2011* -
## substitution

solve by the substitution method 3x+5y=21 x=51-9y

*asked by Sam on October 12, 2010* -
## Math

How do I solve this using the substitution method? x+3y=8 3x-2y=2

*asked by Anonymous on May 30, 2015* -
## algebra

solve by the substitution method. 6x+3y=-21 -4x+y=41

*asked by kim on February 24, 2012* -
## Algebra

If 2x + 2y = 20 & 5x - 3y = 15 Solve using the substitution method.

*asked by Jamie on June 20, 2015* -
## Math

solve by the substitution method 7x+4y=14, x=47-7y please help

*asked by Krista on May 16, 2010* -
## paste

solve by the substitution method 3x+5y=21 x=51-9y

*asked by William Tolson on October 12, 2010* -
## algebra

Solve using the substitution method 6x-3y=18, 6x+3y=-12

*asked by sharday on February 23, 2012* -
## substitution

solve by the substitution method 3x+5y=21 x=51-9y

*asked by Sam on October 12, 2010* -
## Pre Calc

x^2+y=9, x-y+3=0. Need to solve using substitution method.

*asked by Keith on May 18, 2010* -
## Algebra

solve by substitution method y=x-4 6x-9y=21

*asked by Anonymous on April 24, 2010* -
## Math

Solve using the substitution method -x-3y=-20 5x+3y=40

*asked by Chrissy on January 11, 2012* -
## algebra

solve by substitution method 9x+7y=-23 x=48-8y

*asked by anonymous ally on April 23, 2010* -
## math

solve by the substitution method 5x+7y=6 -6x+y=21

*asked by Jennifer on July 26, 2011* -
## college algerba

Solve by the substitution method:

*asked by Sammy on March 30, 2008* -
## substitution method

Solve by substitution method please help me solve this. I do not know how to do this at all. The question is 3x+8y=33 and x=31-6y I know that I have to plug x into the first x like 3(31-6y)+ 8y = 33 but i do not know what to do from there.

*asked by anonymous on October 27, 2010* -
## algebra

i need help with these problems (either a solution or how to plug them into a graphing calculator): 1) Solve by substitution or elimination 4/x + 1/y + 2/z = 4 2/x + 3/y - 1/z = 1 1/x + 1/y + 1/z = 4 2)Solve the system of equations by substitution. x^2 +

*asked by Alyssa on April 5, 2011* -
## math

Solve using the substitution method: 7x+2y=-37 and -5x+y=44 what are the solutions?

*asked by tera on February 10, 2009* -
## cant figure out

Solve by the substitution method. 7x+3y=1 AND -4X+Y=13 What is the solution.

*asked by tera on February 10, 2009* -
## math

1/4v=5 Use the substitution method to solve this problem.

*asked by Janey on May 1, 2013* -
## Math 208

Solve each system by the substitution method. x+3y=2 -x+y=1

*asked by Jodie on January 6, 2011* -
## algebra

Solve the given system by the substitution method. 2x+y=6, 5x-2y=6

*asked by angela on July 14, 2013* -
## Math

How would you solve each system by the substitution method? 1. Y=6x-5 Y=-x+9

*asked by Anonymous on January 29, 2014* -
## algebra

Solve using the substitution method. -8x + y = 18 9x + 13y = 8

*asked by Anonymous on January 13, 2015* -
## maths

solve using substitution& elimination method 2x/5+3y/4=5;3x/10+5y/8=8

*asked by nandhini on December 15, 2015* -
## algebra

Solve the given system by the substitution method. 3x + y = 17 5x -2y = 10

*asked by Anonymous on January 13, 2015* -
## algebra

solve for x using the substitution method -8x + y = 18, 9x + 13y = 8

*asked by Anonymous on January 13, 2015* -
## Algebra 2

Solve the system by the substitution method. 5x+7y=-18 y=5x-14

*asked by saRa on November 4, 2009* -
## Algebra Help Please

solve using the substitution method. -8x + y = 18 9x + 13y = 8

*asked by slomo on January 11, 2015* -
## Algebra Help!!

Solve the given system by the substitution method. 3x + y = 17 5x -2y = 10

*asked by slomo on January 11, 2015* -
## math

solve the equation in substitution method 2m+n=0 m+2n=3

*asked by damola on May 4, 2017* -
## math

Solve the following system using the substitution method: y = 3x - 9 y = -x - 1

*asked by hunter on July 3, 2013* -
## algebra

solve by the substitution method 9x + 5y = -25 x = 7 - 3y Could someone help with steps here also?

*asked by algebra yuck on September 12, 2009*

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