Ответ:

  1. \(\frac{18}{20}=\frac{9}{10}\).
  2. \(\frac{9}{12}=\frac{3}{4}\).
  3. \(\frac{24}{36}=\frac{2}{3}\).
  4. \(\frac{36}{45}=\frac{4}{5}\).
  5. \(\frac{14}{14}=1\).
  6. \(\frac{15}{45}=\frac{1}{3}\).
  7. \(\frac{99}{102}=\frac{33}{34}\).
  8. \(\frac{225}{300}=\frac{3}{4}\).