Respostas

2014-04-21T13:04:13-03:00
4(2) - x + 1 = x + 3(2)
8 - x + 1 = x + 6
- x - x = 6 - 8 - 1
-2x = - 9 + 6
-2x = -3
x = 3/2
1 5 1
2014-04-21T13:33:42-03:00
4.2-X+1=X+3.2
8-X+1-X=6
-2X=6-8-1
-2X=-3
X=-3/2
2 5 2