1. Сократите: 16/24; 36/48; 56/72.

1. \(\frac{16}{24}=\frac{16:8}{24:8}=\frac{2}{3}\).
2. \(\frac{36}{48}=\frac{36:12}{48:12}=\frac{3}{4}\).
3. \(\frac{56}{72}=\frac{56:8}{72:8}=\frac{7}{9}\).

Ответ: \(\frac{2}{3};\ \frac{3}{4};\ \frac{7}{9}\).