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OpenStudy (anonymous):
Solve the system by elimination: 4x + 8y = 20 -4x + 2y = -30
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jimthompson5910 (jim_thompson5910):
Add the equations to get 4x + 8y = 20 -4x + 2y = -30 -------------- 0x+10y = -10 So we then get 10y = -10
jimthompson5910 (jim_thompson5910):
Solve 10y = -10 for y Then use this solution to find the solution for x.
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