SOLUTION: 4x+3y=-5 -9x+y =50 solve using the substitution method

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Question 313450: 4x+3y=-5
-9x+y =50
solve using the substitution method
Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
-9x+y=50 y=50+9x
4x+3(50+9x)=-5
4x+150+27x=-5
31x=-155
x=-5
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-9*-5+y=50
45+y=50
y=5
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proof
-9*-5+5=50