Respostas

2014-04-22T17:08:47-03:00
Exemplo:
razão de 3 para 4
 \frac{3}{4}
3÷4 = 0,75

0,75 =  \frac{75}{100} =  \frac{75:5}{100:5} =  \frac{15}{20} =  \frac{15:5}{20:5} =  \frac{3}{4}