5)
$$\frac{3}{8} : \frac{1}{3} = \frac{3}{8} \cdot \frac{3}{1} = \frac{9}{8} = 1 \frac{1}{8}$$
Ответ: $$1\frac{1}{8}$$
B)
$$\frac{1}{12} : \frac{5}{36} = \frac{1}{12} \cdot \frac{36}{5} = \frac{1}{1} \cdot \frac{3}{5} = \frac{3}{5}$$
Ответ: $$\frac{3}{5}$$
г)
$$\frac{14}{55} : \frac{5}{21} = \frac{14}{55} \cdot \frac{21}{5} = \frac{14 \cdot 21}{55 \cdot 5} = \frac{294}{275}$$
Ответ: $$\frac{294}{275}$$
Д)
$$\frac{121}{234} : \frac{11}{12} = \frac{121}{234} \cdot \frac{12}{11} = \frac{11}{117} \cdot \frac{6}{1} = \frac{66}{117} = \frac{22}{39}$$
Ответ: $$\frac{22}{39}$$