Question

Resolva a equação 10(3x+3) = 10.

Answer 1

$10(3x + 3) = 10 \\ 30x + 30 = 10 \\ 30x = - 20 \\ x = \frac{ - 20}{30} = - \frac{ 2}{3}$

Answer 2

30x+ 30 - 10=0
30x+20=0
30x= -20
x =
$\frac{ - 20}{30}$
x=- 2/3 ou - 0, 6666