Question

Смешанная дробь б) 2 8/15 - (1 3/10 + 2/5);​

Answer 1

$2 \frac{8}{15} - (1 \frac{3}{10} + \frac{2}{5} ) = \\ = 2 \frac{8}{15} - (1 \frac{3}{10} + \frac{4}{10} ) =$

$= 2 \frac{8}{15} - 1 \frac{7}{10} = 2 \frac{16}{30} - 1 \frac{21}{30} = \\ = 1 \frac{46}{30} - 1 \frac{21}{30} = \frac{25}{30} = \frac{5}{6}$

Ответ: $\frac{5}{6}$