Помогите пожалуйста выполните действия 1) 11/12 ÷ 7/24 ÷ 2 2/21 , 2) 13 1/2 × 1 1/2 ÷ 2...

1) $\frac{11}{12} : \frac{7}{24} : \frac{44}{21} = 1,5$

1. $\frac{11}{12} : \frac{7}{24} = \frac{11}{12} * \frac{24}{7} = \frac{22}{7}$

2. $\frac{22}{7} * \frac{21}{44} = \frac{3}{2} = 1,5$

2) $\frac{27}{2} : \frac{3}{2} : \frac{9}{4} = 4$

1. $\frac{27}{2} * \frac{2}{3} = 9$

2. $\frac{9}{1} * \frac{4}{9} = 4$

3) $\frac{13}{14} : \frac{25}{21} : \frac{13}{5} = 0,3$

1. $\frac{13}{14} * \frac{21}{25} = \frac{39}{50}$

2. $\frac{39}{50} * \frac{5}{13} = \frac{3}{10} = 0,3$

4) $\frac{54}{19} * \frac{19}{9} : \frac{27}{8} = 1\frac{21}{27}$

1. $\frac{54}{19} * \frac{19}{9} = 6$

2. $\frac{6}{1} * \frac{8}{27} = \frac{48}{27} = 1\frac{21}{27}$