Ответ:

а) НОЗ(24, 36) = 72:

\(\frac{15}{24}=\frac{45}{72}\), \(\frac{15}{36}=\frac{30}{72}\).

б) НОЗ(360, 144) = 720:

\(\frac{11}{360}=\frac{22}{720}\), \(\frac{19}{144}=\frac{95}{720}\).

Ответ: а) \(\frac{45}{72}\) и \(\frac{30}{72}\); б) \(\frac{22}{720}\) и \(\frac{95}{720}\).