Question

$5(x - 2) - 7(x + 1) = 9.(3 - 2x)$

Answer 1

Boa tarde!!

Vamos calcular:

5 . (x - 2) - 7 . (x + 1) = 9 . (3 - 2x)

5x - 10 - 7x +7 = 27 - 18x

5x - 7x + 18x = 27 + 10 - 7

12x + 18 x = 37 - 7

30x = 30

x = $\frac{30}{30}$

x = 1

Espero ter ajudado^^