Question

quanto é 3(×+1)-2(×-1)=-(×+5)?​

Answer 1

Olá

$\LARGE{}3(x + 1) - 2(x - 1) = - (x + 5) \\ \LARGE{}3x + 3 - 2(x - 1) = - (x + 5) \\ \LARGE{}3x + 3 - 2x + 2 = ( - x + 5) \\ \LARGE{}3x + 3 - 2 + 2 = - x - 5 \\\LARGE{}x + 3 + 2 = - x - 5 \\ \LARGE{}x + 5 = - x - 5 \\ \LARGE{}x + 5 + x = - 5 \\ \LARGE{}x + x = - 5 - 5 \\ \LARGE{}2x = - 5 - 5 \\ \LARGE{}2x = - 10 \\ \\ \LARGE{}\LARGE\boxed{x = - 5}$

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