Задание №1. Поделите обыкновенные дроби, а потом сократите: 4/5 : 1/2; 3/7 : 6/7; 1/2 : 3/4; 8/11 : 16/77; 5/23 : 15/46; 14/25 : 21/50; 7/13 : 5/52; 12/15 : 20/50; 13/24 : 13/48.

1. \(\frac{4}{5}:\frac{1}{2}=\frac{4}{5}\cdot2=\frac{8}{5}\).
2. \(\frac{3}{7}:\frac{6}{7}=\frac{3}{7}\cdot\frac{7}{6}=\frac{1}{2}\).
3. \(\frac{1}{2}:\frac{3}{4}=\frac{1}{2}\cdot\frac{4}{3}=\frac{2}{3}\).
4. \(\frac{8}{11}:\frac{16}{77}=\frac{8}{11}\cdot\frac{77}{16}=\frac{7}{2}\).
5. \(\frac{5}{23}:\frac{15}{46}=\frac{5}{23}\cdot\frac{46}{15}=\frac{2}{3}\).
6. \(\frac{14}{25}:\frac{21}{50}=\frac{14}{25}\cdot\frac{50}{21}=\frac{4}{3}\).
7. \(\frac{7}{13}:\frac{5}{52}=\frac{7}{13}\cdot\frac{52}{5}=\frac{28}{5}\).
8. \(\frac{12}{15}:\frac{20}{50}=\frac{4}{5}:\frac{2}{5}=2\).
9. \(\frac{13}{24}:\frac{13}{48}=\frac{13}{24}\cdot\frac{48}{13}=2\).

Ответ: \(\frac{8}{5};\ \frac{1}{2};\ \frac{2}{3};\ \frac{7}{2};\ \frac{2}{3};\ \frac{4}{3};\ \frac{28}{5};\ 2;\ 2\).