Respostas

2013-12-17T19:14:08-02:00
1 - 3x = 17 - 4x
- 3x + 4x = 17 - 1
x = 16
1 5 1
2013-12-17T23:23:58-02:00
1-3x=17-4x
-3x+4x=17-1
1=16
x=16
1 5 1