Question

x+3=-×+7 alguem me ajuda​

Answer 1

Resposta:

$x + 3 = - x + 7 \\ x + 3 - 3 = - x + 7 - 3 \\ x = - x + 4 \\ x + x = - x + 4 + x \\ 2x = 4 \\ \frac{2x}{2} = \frac{4}{2 } \\ x = 2$