Ответ:

Для каждой пары используем общий знаменатель — наименьшее общее кратное знаменателей.

  1. а) \(\frac{7}{8}\) и \(\frac{3}{4}=\frac{6}{8}\).
  2. б) \(\frac{6}{25}=\frac{24}{100}\) и \(\frac{1}{4}=\frac{25}{100}\).
  3. в) \(\frac{11}{6}=\frac{22}{12}\) и \(\frac{7}{4}=\frac{21}{12}\).
  4. г) \(\frac{12}{20}=\frac{3}{5}\), \(\frac{9}{15}=\frac{3}{5}\).
  5. д) \(\frac{7}{5}=\frac{14}{10}\) и \(\frac{3}{2}=\frac{15}{10}\).
  6. е) \(\frac{5}{6}=\frac{20}{24}\) и \(\frac{5}{8}=\frac{15}{24}\).
  7. ж) \(\frac{12}{24}=\frac{1}{2}\) и \(\frac{1}{2}\).
  8. з) \(\frac{2}{3}=\frac{10}{15}\) и \(\frac{13}{15}\).
  9. и) \(\frac{3}{10}=\frac{18}{60}\) и \(\frac{7}{12}=\frac{35}{60}\).
  10. к) \(\frac{5}{12}\) и \(\frac{3}{4}=\frac{9}{12}\).
  11. л) \(\frac{2}{5}=\frac{16}{40}\) и \(\frac{3}{8}=\frac{15}{40}\).
  12. м) \(\frac{25}{100}\) и \(\frac{1}{4}=\frac{25}{100}\).
  13. н) \(\frac{37}{16}=\frac{37}{16}\) и \(\frac{5}{2}=\frac{40}{16}\).
  14. о) \(\frac{5}{7}=\frac{45}{63}\) и \(\frac{7}{9}=\frac{49}{63}\).
  15. п) \(\frac{3}{20}=\frac{9}{60}\) и \(\frac{1}{6}=\frac{10}{60}\).
  16. р) \(\frac{13}{25}=\frac{26}{50}\) и \(\frac{27}{50}\).
  17. с) \(\frac{15}{77}=\frac{45}{231}\) и \(\frac{10}{33}=\frac{70}{231}\).
  18. т) \(\frac{4}{105}=\frac{32}{840}\) и \(\frac{7}{120}=\frac{49}{840}\).
  19. у) \(\frac{1}{64}=\frac{135}{8640}\) и \(\frac{2}{135}=\frac{128}{8640}\).
  20. ф) \(\frac{6}{59}=\frac{174}{1711}\) и \(\frac{3}{29}=\frac{177}{1711}\).