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2013-12-04T16:01:02-02:00
12 ----- 2
M ----- 3
12.3 = 2M
2M = 36
M=18
2013-12-04T16:19:08-02:00
Voce sabe que 2 / 3

entao

2 ----- 12
3 ------ x

2x= 36

x= 36/2

x= 18

logo a resposta e 18!