Question

$1\frac{2}{3} -\frac{4}{5} : \frac{6}{7} =?$

Answer 1

Ответ:

$\frac{11}{15}$

Объяснение:

$1 \frac{2}{3} - \frac{4}{5} \div \frac{6}{7} = 1 \frac{2}{3} - \frac{4}{5} \times \frac{7}{6} = 1 \frac{2}{3} - \frac{4 \times 7}{5 \times 6} = 1 \frac{2}{3} - \frac{28}{30} = 1 \frac{2}{3} - \frac{14}{15} = \frac{5}{3} - \frac{14}{15} = \frac{25 - 14}{15} = \frac{11}{15}$