Question

1 Resolva as equações abaixo:
(A) 3 x = 12
(B) 6 x - 4 = 2x + 8

Answer 1

Resposta:

(A) =

$3x = 12 \\ x = 12 \div 3 \\ x = 4$

(B) =

$6x - 4 = 2x + 8 \\ 6x - 2x = 4 + 8 \\ 4x = 12 \\ x = 12 \div 4 \\ x = 3$