Respostas

2013-11-21T09:34:37-02:00
V + d = 12 .(-1)
2v+d = 17 

-v -d = -12
2v+d =  17

v = 17-12
v = 5
v+d = 12
5+d = 12
d = 12-5
d = 7
5 vitórias e 7 derrotas
2 5 2