Ответ:

  1. \(\frac{120}{224}=\frac{120:8}{224:8}=\frac{15}{28}\).
  2. \(\frac{264}{1540}=\frac{264:44}{1540:44}=\frac6{35}\).
  3. \(\frac{4050}{486}=\frac{4050:162}{486:162}=\frac{25}{3}=8\frac13\).
  4. \(\frac{4455}{4725}=\frac{4455:135}{4725:135}=\frac{33}{35}\).

Ответ: а) \(\frac{15}{28}\); б) \(\frac6{35}\); в) \(8\frac13\); г) \(\frac{33}{35}\).