Respostas

2014-08-12T12:30:33-03:00
8 - 2 (5x - 1) = 2 (x - 3) = 18
8 - 10x + 2 = 2x - 6 = 18
-10x - 2x = - 6 -18 -8 - 2
-12x = - 34
x = -34/ 12
x = -34/-12 = 2,83
espero ter ajudado !