Question

c) qual o valor de x?

Answer 1

Resposta:

$x + x + x + 2 = x + 10 \\ 3x + 2 = x + 10 \\ 3x + 2 - x = 10 \\ 2x + 2= 10 \\ 2x = 10 - 2 \\ 2x = 8 \\ x = \frac{8}{2} = 4$