Ответ:

Наименьший общий знаменатель — наименьшее общее кратное знаменателей.

  1. НОК(4, 6) = 12: \(\frac{1}{4}=\frac{3}{12}\), \(\frac{1}{6}=\frac{2}{12}\).
  2. НОК(9, 12) = 36: \(\frac{4}{9}=\frac{16}{36}\), \(\frac{7}{12}=\frac{21}{36}\).
  3. НОК(6, 18) = 18: \(\frac{5}{6}=\frac{15}{18}\), \(\frac{7}{18}=\frac{7}{18}\).
  4. НОК(8, 15) = 120: \(\frac{3}{8}=\frac{45}{120}\), \(\frac{4}{15}=\frac{32}{120}\).
  5. НОК(15, 12) = 60: \(\frac{2}{15}=\frac{8}{60}\), \(\frac{11}{12}=\frac{55}{60}\).
  6. НОК(12, 18) = 36: \(\frac{1}{12}=\frac{3}{36}\), \(\frac{1}{18}=\frac{2}{36}\).
  7. НОК(24, 18) = 72: \(\frac{1}{24}=\frac{3}{72}\), \(\frac{1}{18}=\frac{4}{72}\).
  8. НОК(10, 8, 4) = 40: \(\frac{3}{10}=\frac{12}{40}\), \(\frac{3}{8}=\frac{15}{40}\), \(\frac{3}{4}=\frac{30}{40}\).