Question

( x +15) + (x+12)=5×​

Answer 1

$(x + 15) + (x + 12) = 5x$

$x + x + 15 + 12 = 5x$

$2x + 27 = 5x$

$2x - 5x = - 27$

$- 3x = - 27$

$x = \frac{ - 27}{ - 3}$

Sinais iguais, resultado positivo

$x = 9$