SOLUTION: Solve the system by substitution 2x + 8y = 44 5x - 8y = -86

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Question 470502: Solve the system by substitution
2x + 8y = 44
5x - 8y = -86
Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
From the bottom equation, 5x + 86 = 8y.
Substitute 5x + 86 for y in the top equation: 2x + 5x + 86 = 44
==> 7x = -42 ==> x = -6.
==> 8y = 5*-6 + 86 ==> 8y = 56 ==> y = 7.