Respostas

2014-08-07T23:37:52-03:00
Diminui o x e resolve  operação 9+8
3x-2x=8+9
x=17
2 4 2
2014-08-07T23:37:59-03:00
3x-2x = 8+9
(3-2)x = 8+9
1x = 17
x = 17
1 5 1