- (2x + y) + (3 - x) + (2y - 5) = - 2x - y + 3 - x + 2y - 5 = - 3x + y - 2
x = 2 i y = - 3 to - 3x + y - 2 = - 3 · 2 + (- 3) - 2 = - 6 - 2 - 3 = - 11
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- (2x + y) + (3 - x) + (2y - 5) = - 2x - y + 3 - x + 2y - 5 = - 3x + y - 2
x = 2 i y = - 3 to - 3x + y - 2 = - 3 · 2 + (- 3) - 2 = - 6 - 2 - 3 = - 11