. 7. 7 3 - 1 - 8,24-7 8.8: 동쪽·=10 9 3 : 16 - " 15.5.233160 10. 236 24 23 5 3

Ответ:

1. Задача 7:

\[\frac{6}{7} : 3 = \frac{6}{7} \cdot \frac{1}{3} = \frac{2}{7}\]

2. Задача 8:

\[8 : \frac{4}{5} = \frac{8 \cdot 5}{4} = 2 \cdot 5 = 10\]

3. Задача 9:

\[\frac{4}{5} \cdot (\frac{15}{16} : \frac{3}{4}) = \frac{4}{5} \cdot (\frac{15}{16} \cdot \frac{4}{3}) = \frac{4}{5} \cdot \frac{5}{4} = 1\]

4. Задача 10:

\[\frac{15}{23} \cdot \frac{5}{6} \cdot \frac{23}{24} = \frac{15 \cdot 5 \cdot 23}{23 \cdot 6 \cdot 24} = \frac{15 \cdot 5}{6 \cdot 24} = \frac{5 \cdot 5}{2 \cdot 24} = \frac{25}{48}\]

Ответ: