1. Выполните деление.

а) \( \frac{5}{9} \div \frac{3}{5} = \frac{5}{9} \cdot \frac{5}{3} = \frac{25}{27} \). б) \( 7 \frac{6}{7} \div \frac{9}{7} = \frac{55}{7} \cdot \frac{7}{9} = \frac{385}{63} = \frac{55}{9} \). в) \( \frac{10}{51} \div \frac{15}{68} = \frac{10}{51} \cdot \frac{68}{15} = \frac{680}{765} = \frac{8}{9} \). г) \( \frac{24}{25} \div 12 = \frac{24}{25} \cdot \frac{1}{12} = \frac{24}{300} = \frac{2}{25} \). д) \( 14 \div \frac{7}{8} = 14 \cdot \frac{8}{7} = \frac{112}{7} = 16 \). е) \( 3 \frac{5}{9} \div 2 \frac{2}{3} = \frac{32}{9} \div \frac{8}{3} = \frac{32}{9} \cdot \frac{3}{8} = \frac{96}{72} = \frac{4}{3} \).