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OpenStudy (anonymous):
3x+y=5 2x-2y=-2
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OpenStudy (anonymous):
y = 5 - 3x sub the equation into another one 2x - 2(5 - 3x) = -2 2x - 10 +6x = -2 8x = 8 x = 1 3 + y = 5 y = 2 therefore x, y = 1,2
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