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OpenStudy (anonymous):
Solve: 2a - b + c = 0 a - b = -3 2a + b = -3
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OpenStudy (wolf1728):
Add these 2 equations: a - b = -3 2a + b = -3 equals 3a = -6 a = -2 b= 1 Substitute these values into this equation to get c: 2a - b + c = 0
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