Respostas

2014-03-27T16:56:13-03:00
2x=1-3
2x=-2
x=-2/2
x=-1
By: Vanessa espero ter ajudado;)
1 5 1
2014-03-27T16:59:29-03:00
2x+3=1
2x=1-3
2x=-2
x=-2/2
X=-1
1 1 1