felpopinha2 15/10/2013 2x - 10 = x/2 + 50 m.m.c.= 22x - 10 = x + 100 24x - 20 = x + 1004x - x = 100 + 203x = 120x = 120/3x = 40
felpopinha2
2x - 10 = x/2 + 50 m.m.c.= 2
2x - 10 = x + 100
2
4x - 20 = x + 100
4x - x = 100 + 20
3x = 120
x = 120/3
x = 40