Задание 2 a) \(\frac{2}{5} \cdot \frac{3}{4}\) г) \(2 \frac{1}{2} : \frac{18}{25}\) б) \(\frac{11}{14} : \frac{7}{22}\) д) \(5 \frac{1}{3} \cdot 3 \frac{8}{9}\) в) \(\frac{7}{8} \cdot 5 \frac{1}{3}\) e) \(4 \frac{1}{2} : 2 \frac{4}{5}\)

а) \(\frac{2}{5} \cdot \frac{3}{4} = \frac{2 \cdot 3}{5 \cdot 4} = \frac{6}{20} = \frac{3}{10}\)

б) \(\frac{11}{14} : \frac{7}{22} = \frac{11}{14} \cdot \frac{22}{7} = \frac{11 \cdot 22}{14 \cdot 7} = \frac{242}{98} = \frac{121}{49} = \frac{11}{4}\)

в) \(\frac{7}{8} \cdot 5 \frac{1}{3} = \(\frac{7}{8} \cdot \frac{16}{3} = \frac{7 \cdot 16}{8 \cdot 3} = \frac{112}{24} = \frac{56}{12} = \frac{35}{12}\)

г) \(2 \frac{1}{2} : \frac{18}{25} = \(\frac{5}{2} \cdot \frac{25}{18} = \frac{5 \cdot 25}{2 \cdot 18} = \frac{125}{36} = \frac{25}{36}\)

д) \(5 \frac{1}{3} \cdot 3 \frac{8}{9} = \(\frac{16}{3} \cdot \frac{35}{9} = \frac{16 \cdot 35}{3 \cdot 9} = \frac{560}{27} = \frac{200}{27}\)

е) \(4 \frac{1}{2} : 2 \frac{4}{5} = \(\frac{9}{2} : \frac{14}{5} = \frac{9}{2} \cdot \frac{5}{14} = \frac{9 \cdot 5}{2 \cdot 14} = \frac{45}{28} = \frac{5}{3}\)