SOLUTION: Solve by elimination method and what is the solution set?
3x-7y=15
-5x+4y=-25
Algebra.Com
Question 471402: Solve by elimination method and what is the solution set?
3x-7y=15
-5x+4y=-25
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
3 x -7 y = 15 .............1
-5 x + 4 y = -25 .............2
multiply (1)by 4
Multiply (2) by 7
12 x -28 y = 60
-35 x 28 y = -175
Add the two equations
-23 x = -115
/ -23
x = 5
plug value of x in (1)
3 x + -7 y = 15
15 + -7 y = 15
-7 y = 15 -15
-7 y = 0
y = 0
CHECK
3 x + -7 y = 15
15 0 = 15
equation1 15 = 15
RELATED QUESTIONS
what is the solution set using eliminaion mehod?
3x-7y=15... (answered by lynnlo)
solve the following system bu substitution
x=7y+9
x=7/4y
what is the solution set?
(answered by solver91311,JBarnum)
Solve
-4y-20=5x
-3x+15=-2y
(By elimination... (answered by MathLover1)
3x-7y=24
-5x+4y=-40
Solve the following system by using the elimination... (answered by Alan3354)
Solve by the elimination method.
3x-2y=22
5x+4y=0
What is the solution of the... (answered by HyperBrain)
solve by elimination method
7x+4y=15
4x-4y=-48
What is the solution of the... (answered by jim_thompson5910)
solve by the elimination method
x+7y=18
-x+4y=4
The solution... (answered by sudhanshu_kmr)
Solve by elimination method and what is the solution set?
8x-y=20
x+y=7
(answered by robertb)
{{{x+4y=10}}}
{{{-x+4y=-2}}}
Solve by the elimination method. what is the... (answered by MathLover1)