Question

¿cuanto es parentesis 3x +6 cierro parentesis =12?

Answer 1

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

Answer 2

(3x+6)=12
3x+6=12
3x=12-6
3x=6
x=6/3
x=2