Question

calcule 14 ( X + 3 ) = 5 X + 12

Answer 1

$14( + 3x) = 5x + 12 \\ 14 + 3x = 5x + 12 \\ + 3x - 5x = - 14 + 12 \\ - 2x = - 2 \\ x = - \frac{2}{2} \\ x = - 2$
$- 2x = - 2 \\ x = - \frac{2}{2} \\ x = - 2$