Respostas

2014-04-26T20:02:27-03:00
2x +3 = 6 - x
2x+x = 6-3
3x = 3
x - 3/3
x=1
1 5 1
2014-04-26T20:09:46-03:00
 2x + 3 = 6 – x2x+x=6-3
3x=3
x=3/3
x=1