Respostas

2013-06-04T13:32:02-03:00

4x - 2 = 2x + 8
4x - 2x = 8 + 2
2x = 10
x = 10/2
x = 5  :D 

2013-06-04T13:32:06-03:00

4x-2=2x+8

4x-2x=8+2

2x=10

x=10/2

x=5