Question

Calcule x , sabendo que a//b//c : *

Answer 1

Resposta:

$\frac{4}{7}=\frac{2x-2}{3x+1}$

$7(2x-2)=4(3x+1)$

$14x-14=12x+4$

$14x-12x=4+14$

$2x=18$

$x=\frac{18}{2}$

$x=9$

bons estudos!