Respostas

2014-08-06T17:57:44-03:00
5+2x=1
2x=1-5
2x= -4
x= -4/2
x= -2

Espero ter ajudado !
1 3 1
2014-08-06T17:58:17-03:00
5+2x=1
2x=1-5
2x= -4
x= -4/2
1 4 1