3) \(1\frac{1}{2}\) : \(\frac{1}{2}\) = 3 \(\frac{2}{5}\) : \(\frac{1}{7}\) = \(\frac{14}{5}\) 3 \(\frac{3}{4}\) : \(\frac{1}{5}\) = \(\frac{75}{4}\) \(\frac{1}{3}\) : \(\frac{1}{2}\) = \(\frac{2}{3}\) \(\frac{4}{5}\) : \(\frac{2}{3}\) = \(\frac{6}{5}\)

Решение:

Примеры на деление смешанных и обыкновенных дробей:

1. \(1\frac{1}{2} : \frac{1}{2} = \frac{3}{2} : \frac{1}{2} = \frac{3}{2} \times \frac{2}{1} = 3\)
2. \(\frac{2}{5} : \frac{1}{7} = \frac{2}{5} \times \frac{7}{1} = \frac{14}{5}\)
3. \(3\frac{3}{4} : \frac{1}{5} = \frac{15}{4} : \frac{1}{5} = \frac{15}{4} \times \frac{5}{1} = \frac{75}{4}\)
4. \(\frac{1}{3} : \frac{1}{2} = \frac{1}{3} \times \frac{2}{1} = \frac{2}{3}\)
5. \(\frac{4}{5} : \frac{2}{3} = \frac{4}{5} \times \frac{3}{2} = \frac{12}{10} = \frac{6}{5}\)

Ответ: 3, \(\frac{14}{5}\), \(\frac{75}{4}\), \(\frac{2}{3}\), \(\frac{6}{5}\).