Question

помогите срочно плиз :((( (даю 25 баллов)​

Answer 1

Ответ - 5 вариант : " 1 7/24 "

Answer 2

$(1 \frac{2}{7} \div 2 \frac{4}{7} - \frac{2}{5} \times \frac{5}{6} ) + 2 \frac{2}{5} \div 2 \frac{2}{15} = \\ (\frac{9}{7} \times \frac{7}{18} - \frac{2}{5} \times \frac{5}{6} ) + \frac{12}{5} \times \frac{15}{32} = \\ ( \frac{1}{2} - \frac{1}{3} ) + 1\frac{1}{8} = \\ \frac{1}{6} + 1\frac{1}{8} = \\ 1 \frac{7}{24}$