Respostas

2013-11-04T14:07:44-02:00
- 7x = 14
- x = 14/7
- x =  2 ( - 1 )
x = - 2
1 5 1
2013-11-04T14:40:18-02:00
-7x=14
x=14/-7
x=-2

Resposta é -2
1 5 1