Respostas

2014-06-04T09:36:12-03:00
4. (x-2)=4+2. (x-1)
4x - 8 = 4 + 2x - 2
4x - 2x = 4 - 2 + 8
2x = 10
x = 10 / 2
x = 5 
1 5 1
2014-06-04T09:38:32-03:00
4.(x-2)4+2.(x-1)=7.x
2.x 4+ 1.x
2.x 5.x
7.x