Respostas

2013-08-24T21:59:09-03:00
3 (x-2) = 2 x - 4
3x - 6 = 2x - 4
3x - 2x = - 4 + 6
x = 2
1 4 1
2013-08-24T22:24:08-03:00
3(x-2)=2x-4
3x-6=2x-4
3x-2x=6-4
x=2