Respostas

2014-05-21T23:57:37-03:00
3.( \frac{7}{15} )
 \frac{3}{1}  \frac{7}{15}
 \frac{21}{15} - simplificando por 3
 \frac{7}{5}
2 4 2
2014-05-22T00:13:12-03:00
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