Question

Qual o valor de x nas proporções x +6/ x-6 = 2/3

Answer 1

$\frac{\left(x+6\right)}{\left(x-6\right)}=\frac{2}{3}$
$\left(x+6\right)\cdot \:3=\left(x-6\right)\cdot \:2$
$3x+18=2x-12$
$x=-30$