Выполните деление: 1) 4/9 : 7/8; 2) 6/25 : 12/35; 3) 8/65 : 4/13; 4) 48/49 : 32/63.

1. \(\frac{4}{9}:\frac{7}{8}=\frac{4}{9}\cdot\frac{8}{7}=\frac{32}{63}\).
2. \(\frac{6}{25}:\frac{12}{35}=\frac{6}{25}\cdot\frac{35}{12}=\frac{7}{10}\).
3. \(\frac{8}{65}:\frac{4}{13}=\frac{8}{65}\cdot\frac{13}{4}=\frac{2}{5}\).
4. \(\frac{48}{49}:\frac{32}{63}=\frac{48}{49}\cdot\frac{63}{32}=\frac{27}{14}\).

Ответ: 1) \(\frac{32}{63}\); 2) \(\frac{7}{10}\); 3) \(\frac{2}{5}\); 4) \(\frac{27}{14}\).