Question

(1/2+1/4-2/5):4/5 как решить

Answer 1

$( \frac{1}{2} + \frac{1}{4} - \frac{2}{5} ) \div \frac{4}{5} = \frac{7}{20} \times \frac{5}{4} = \frac{7}{4} \times \frac{1}{4} = \frac{7}{16}$