Ответ:
- \(\frac{2}{13}\cdot5=\frac{10}{13}\).
- \(\frac{4}{17}\cdot3=\frac{12}{17}\).
- \(\frac{8}{9}\cdot2=\frac{16}{9}=1\frac{7}{9}\).
- \(\frac{4}{49}\cdot7=\frac{4}{7}\).
- \(7\cdot\frac{3}{40}=\frac{21}{40}\).
- \(6\cdot\frac{15}{18}=\frac{90}{18}=5\).
- \(\frac{7}{12}\cdot24=7\cdot2=14\).
- \(45\cdot\frac{8}{15}=3\cdot8=24\).
