Respostas

2014-08-22T17:53:29-03:00
3x-2x=3x+2
x=3x+2
3x+2-x=0
2x+2=0
2x=-2
x=-2/2
x=-1
1 1 1
A melhor resposta!
2014-08-22T17:54:57-03:00
3x-2x=3x+2
x-3x=2
-2x=2
x=2/-2
x=-1
2 5 2