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y = x + 43y + x = 8

substituting: 3*(x + 4) + x = 8 => 3x + 12 + x = 8 => 4x = -4 => x = -1

and then y = x + 4 = -1 + 4 = 3.


So the solution is (x, y) = (-1, 3)


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10y ago

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