Question

Operação com Frações

5 . 1 - 7 . 4
2 5 4 7

Answer 1

$\frac{5}{2} . \frac{1}{5} - \frac{7}{4} . \frac{4}{7} \\ \\ \frac{5}{10} - \frac{28}{28} \\ \\ \frac{1}{2} -1\\ \\ \frac{1}{2} - \frac{2}{2} =\boxed{\boxed{-\ \frac{1}{2} }} \ \ \ \ \ \ \ \ \ ok$