Ответ:
- а) \(\frac{2}{5}\cdot\frac{3}{7}=\frac{6}{35}\).
- б) \(\frac{3}{5}\cdot\frac{2}{27}=\frac{6}{135}=\frac{2}{45}\).
- в) \(\frac{15}{16}\cdot\frac{8}{9}=\frac{120}{144}=\frac{5}{6}\).
- г) \(5\cdot\frac{2}{11}=\frac{10}{11}\).
- д) \(\frac{2}{3}\cdot1\frac{2}{3}=\frac{2}{3}\cdot\frac{5}{3}=\frac{10}{9}=1\frac{1}{9}\).
- е) \(3\frac{1}{2}\cdot1\frac{3}{7}=\frac{7}{2}\cdot\frac{10}{7}=5\).
