Question

Resolva: -2 (x+4) = 3 (2x - 4) *

- 0,25
- 0,10
0,5
0,25
+ 5

Answer 1

Oie, Td Bom?!

■ Resposta: 3° alternativa.

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

$- 2x - 8 = 6x - 12$

$- 2x - 6x = - 12 + 8$

$- 8x = - 4 \: . \: ( - 1)$

$8x = 4$

$x = \frac{4}{8} ⇒x = \frac{4 {}^{ \div 4} }{8 {}^{ \div 4} }$

$x = \frac{1}{2}$

$x = 0,5$

Att. Makaveli1996