Calcule a razão do primeiro para o segundo número, nos pares apresentados abaixo:
a) 30 e 50
b) 39 e 26
c) 3/8 e 6/5
d) 2/3 e 13/14
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![a)~~~~ \frac{30}{50} = \frac{3}{5} \\ \\ b)~~~~ \frac{39}{26} = \frac{3}{2} \\ \\ c)~~~~ \frac{3}{8} \div \frac{6}{5} = \frac{3}{8} \times \frac{5}{6} = \frac{15}{48} = \frac{5}{16} \\ \\ d)~~~~ \frac{2}{3} \div \frac{13}{14} = \frac{2}{3} \times \frac{14}{13} = \frac{28}{39} a)~~~~ \frac{30}{50} = \frac{3}{5} \\ \\ b)~~~~ \frac{39}{26} = \frac{3}{2} \\ \\ c)~~~~ \frac{3}{8} \div \frac{6}{5} = \frac{3}{8} \times \frac{5}{6} = \frac{15}{48} = \frac{5}{16} \\ \\ d)~~~~ \frac{2}{3} \div \frac{13}{14} = \frac{2}{3} \times \frac{14}{13} = \frac{28}{39}](https://tex.z-dn.net/?f=a%29%7E%7E%7E%7E+%5Cfrac%7B30%7D%7B50%7D++%3D+%5Cfrac%7B3%7D%7B5%7D++%5C%5C++%5C%5C+b%29%7E%7E%7E%7E+%5Cfrac%7B39%7D%7B26%7D+%3D+%5Cfrac%7B3%7D%7B2%7D++%5C%5C++%5C%5C++c%29%7E%7E%7E%7E+%5Cfrac%7B3%7D%7B8%7D+%5Cdiv+%5Cfrac%7B6%7D%7B5%7D+%3D+%5Cfrac%7B3%7D%7B8%7D+%5Ctimes+%5Cfrac%7B5%7D%7B6%7D+%3D+%5Cfrac%7B15%7D%7B48%7D+%3D+%5Cfrac%7B5%7D%7B16%7D++%5C%5C++%5C%5C+d%29%7E%7E%7E%7E+%5Cfrac%7B2%7D%7B3%7D+%5Cdiv+%5Cfrac%7B13%7D%7B14%7D+%3D+%5Cfrac%7B2%7D%7B3%7D+%5Ctimes+%5Cfrac%7B14%7D%7B13%7D+%3D+%5Cfrac%7B28%7D%7B39%7D+)
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