Выполните умножение1) 1 3/7×2×4/5×3/4 2)3 3/4×5/12×8/15 3) 1 5/6×8 2/11×4/9 4) 2 1/27×3...

1) $\frac{13}{7} *2* \frac{4}{5} * \frac{3}{4} = \frac{13}{7} *2* \frac{3}{5} = \frac{39}{35} *2= \frac{78}{35} =2 \frac{8}{35}$

2) $\frac{33}{4} * \frac{5}{12} * \frac{8}{15} = \frac{33}{4} * \frac{2}{9} = \frac{66}{36} =1 \frac{30}{36}$

3) $\frac{15}{6}* \frac{82}{11}* \frac{4}{9} = \frac{82}{11} * \frac{10}{9} = \frac{820}{99} =8 \frac{28}{99}$

4) $\frac{21}{27} * \frac{31}{5} * \frac{74}{11} = \frac{21}{27} *6 \frac{1}{5} *6 \frac{8}{11} = \frac{21}{27}*36 \frac{8}{55} =36 \frac{168}{1465}$