Respostas

2014-08-10T16:23:11-03:00
Educacao.uol.com.br/matematica/fracao-geratriz.jhtm
2014-08-10T16:46:27-03:00
A) 4/9
b) 125-1/990 =  124/990  =  62/495
c)54/99
d)47-4/900  =  43/900
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