2. Выполнить деление и сократить 4. 24 18 A) 5'30; Б)17:19; В) 19 : 64

A) \[\frac{4}{5} : \frac{24}{30} = \frac{4}{5} \cdot \frac{30}{24} = \frac{4 \cdot 30}{5 \cdot 24} = \frac{120}{120} = 1\]

Б) \[\frac{17}{1} : \frac{19}{1} = \frac{17}{1} \cdot \frac{1}{19} = \frac{17}{19}\]

B) \[\frac{18}{19} : 64 = \frac{18}{19} : \frac{64}{1} = \frac{18}{19} \cdot \frac{1}{64} = \frac{18 \cdot 1}{19 \cdot 64} = \frac{18}{1216} = \frac{9 \cdot 2}{608 \cdot 2} = \frac{9}{608}\]