Вычислите: 4/5 : 1/2; 3/7 : 6/7; 1/2 : 3/4; 5/7 : 5/7; 8/11 : 16/77; 5/23 : 15/46; 14/25 : 21/50; 18/20 : 27/40; 63/70 : 81/270; 2/33 : 24/30.

1. \(\frac{4}{5}:\frac{1}{2}=\frac{8}{5}\)
2. \(\frac{3}{7}:\frac{6}{7}=\frac{1}{2}\)
3. \(\frac{1}{2}:\frac{3}{4}=\frac{2}{3}\)
4. \(\frac{5}{7}:\frac{5}{7}=1\)
5. \(\frac{8}{11}:\frac{16}{77}=\frac{7}{2}\)
6. \(\frac{5}{23}:\frac{15}{46}=\frac{2}{3}\)
7. \(\frac{14}{25}:\frac{21}{50}=\frac{4}{3}\)
8. \(\frac{18}{20}:\frac{27}{40}=\frac{4}{3}\)
9. \(\frac{63}{70}:\frac{81}{270}=3\)
10. \(\frac{2}{33}:\frac{24}{30}=\frac{5}{66}\)

Ответ: 8/5; 1/2; 2/3; 1; 7/2; 2/3; 4/3; 4/3; 3; 5/66.