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2013-09-25T12:51:06-03:00
4x - 10 = 2x + 2

-10 - 2 = 2x - 4x

-12 = -2x .(-1)
2x = 12
x = 12/2
x = 6


5 4 5
2013-09-25T12:52:11-03:00
4x - 10 = 2x + 2
x = 6
1 5 1
4x - 10 = 2x + 2
4x-2x=2+10
2x=12
x=6