Найдите разность:

Решение:

1. \( \frac{4}{5} - \frac{3}{4} = \frac{16}{20} - \frac{15}{20} = \frac{1}{20} \)
2. \( \frac{3}{10} - \frac{2}{7} = \frac{21}{70} - \frac{20}{70} = \frac{1}{70} \)
3. \( \frac{2}{3} - \frac{1}{7} = \frac{14}{21} - \frac{3}{21} = \frac{11}{21} \)
4. \( \frac{5}{9} - \frac{1}{3} = \frac{5}{9} - \frac{3}{9} = \frac{2}{9} \)
5. \( \frac{5}{6} - \frac{5}{12} = \frac{10}{12} - \frac{5}{12} = \frac{5}{12} \)
6. \( \frac{2}{13} - 0 = \frac{2}{13} \)

Ответ: а) \( \frac{1}{20} \); б) \( \frac{1}{70} \); в) \( \frac{11}{21} \); г) \( \frac{2}{9} \); д) \( \frac{5}{12} \); е) \( \frac{2}{13} \).