Ответ:
- \(\frac2{15}\cdot3=\frac6{15}=\frac25\).
- \(\frac4{11}\cdot3=\frac{12}{11}=1\frac1{11}\).
- \(\frac89\cdot2=\frac{16}{9}=1\frac79\).
- \(\frac4{49}\cdot7=\frac{28}{49}=\frac47\).
- \(7\cdot\frac3{40}=\frac{21}{40}\).
- \(6\cdot\frac{15}{18}=\frac{90}{18}=5\).
- \(\frac7{12}\cdot24=7\cdot2=14\).
- \(45\cdot\frac8{15}=3\cdot8=24\).
