Respostas

2014-08-11T14:10:41-03:00
Resolvendo temos:-3x-6=10x+15
7x=21
x=21/7
x=3
1 5 1
A melhor resposta!
2014-08-11T14:14:29-03:00
- 3 ( x + 2 ) = - 5 ( 2x - 3 )
- 3x - 6 = - 10x + 15
- 3x + 10x = 15 + 6
7x = 21
x = 21
       7

x = 3
3 5 3