Respostas

2014-05-02T12:34:12-03:00
2x + 3 = 6 - x
2x - x = 6 - 3
x= 3

espero ter te ajudado ^^
2014-05-02T12:35:56-03:00
2x + 3 = 6 - x
2x + x = 6 -3 
3x = 9
x = 9 / 3
x=3