Вычислите: 2/5 : 3/4; 1/7 : 2/3; 4/5 : 6/5; 1/8 : 7/9; 2/3 : 6/7; 5/6 : 4/10; 11/14 : 7/22; 4/15 : 5/8; 3/10 : 2/6; 17/33 : 11/34.

1. \(\frac{2}{5}:\frac{3}{4}=\frac{2}{5}\cdot\frac{4}{3}=\frac{8}{15}\)
2. \(\frac{1}{7}:\frac{2}{3}=\frac{1}{7}\cdot\frac{3}{2}=\frac{3}{14}\)
3. \(\frac{4}{5}:\frac{6}{5}=\frac{4}{5}\cdot\frac{5}{6}=\frac{2}{3}\)
4. \(\frac{1}{8}:\frac{7}{9}=\frac{1}{8}\cdot\frac{9}{7}=\frac{9}{56}\)
5. \(\frac{2}{3}:\frac{6}{7}=\frac{2}{3}\cdot\frac{7}{6}=\frac{7}{9}\)
6. \(\frac{5}{6}:\frac{4}{10}=\frac{5}{6}\cdot\frac{10}{4}=\frac{25}{12}\)
7. \(\frac{11}{14}:\frac{7}{22}=\frac{11}{14}\cdot\frac{22}{7}=\frac{121}{49}\)
8. \(\frac{4}{15}:\frac{5}{8}=\frac{4}{15}\cdot\frac{8}{5}=\frac{32}{75}\)
9. \(\frac{3}{10}:\frac{2}{6}=\frac{3}{10}\cdot\frac{6}{2}=\frac{9}{10}\)
10. \(\frac{17}{33}:\frac{11}{34}=\frac{17}{33}\cdot\frac{34}{11}=\frac{34}{21}\)

Ответ: 8/15; 3/14; 2/3; 9/56; 7/9; 25/12; 121/49; 32/75; 9/10; 34/21.