Question

Quanto é -4(x+40 +7(x+2) = 2x + 12 ?

Rápido, obrigada

Answer 1

$-4(x+40) +7(x+2) = 2x + 12 \\ -4x-160+7x+14=2x+12 \\ -4x+7x-2x=160-14+12 \\ x=158 \\ \\ -4(x+40 +7(x+2))=2x+12 \\ -4(x+40+7x+14)=2x+12 \\ -4x-160-7x-14=2x+12 \\ -4x-7x-2x=160+14+12 \\ -13x=168 \\ x=- \frac{168}{13}$