SOLUTION: solve each system using substitution. 2=2y-x 23=5y-4x

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Question 562104: solve each system using substitution.

2=2y-x
23=5y-4x
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
2=2y-x
x=2y-2
23=5y-4x
substitute x in second equation
23=5y-4x
23=5y-4(2y-2)
23=5y-8y+8
23=-3y+8
-3y=23-8
y=-5
plug y in equation to get x
x=2y-2
x=-10-2
x=-12