Respostas

2013-09-24T14:49:19-03:00
X + (x+1) + (x+2) = 393é isso ai 

2013-09-24T15:02:52-03:00
X + (x+1) + (x+2) = 393
3x + 3 = 393
3x + 3 - 393 = 0
x = 390/3
x = 130
substituindo X na equaçao:
130 + (130+1) + (130+2) = 393
130 + 131 + 132 = 393
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