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2013-09-10T09:19:16-03:00
5x+5 -3x -6 = 0
5x-3x=6-5
2x=1
x=1/2
10 4 10
2013-09-10T09:19:48-03:00
5 (x+1) - 3 (x+2) = 0
5x + 5 - 3x - 6
5x - 3x = -5+ 6
2x = 1
x = 1/2
8 4 8