Ответ:

  1. \(ЕҮОБ(24,60)=12\), \(\frac{24}{60}=\frac{2}{5}\).
  2. \(ЕҮОБ(45,105)=15\), \(\frac{45}{105}=\frac{3}{7}\).
  3. \(ЕҮОБ(39,130)=13\), \(\frac{39}{130}=\frac{3}{10}\).
  4. \(ЕҮОБ(64,144)=16\), \(\frac{64}{144}=\frac{4}{9}\).