Respostas

2014-08-04T18:46:56-03:00
2014-08-04T18:50:58-03:00
6x = 2x + 16
16 + 2x = 6x
16 = 6x - 2x
16 = 4x
4x = 16
x = 16 / 4
x = 4
1 5 1