Ответ:

  1. \(\frac{12}{18}:4=\frac{2}{3}\cdot\frac{1}{4}=\frac{1}{6}\).
  2. \(\frac{18}{35}:9=\frac{18}{35}\cdot\frac{1}{9}=\frac{2}{35}\).
  3. \(\frac{25}{36}:5=\frac{25}{36}\cdot\frac{1}{5}=\frac{5}{36}\).
  4. \(\frac{5}{6}:7=\frac{5}{6}\cdot\frac{1}{7}=\frac{5}{42}\).
  5. \(\frac{9}{15}:6=\frac{3}{5}\cdot\frac{1}{6}=\frac{1}{10}\).
  6. \(\frac{7}{10}:8=\frac{7}{10}\cdot\frac{1}{8}=\frac{7}{80}\).