1) Сократите дробь:$$\frac{5}{10}, \frac{14}{63}, \frac{72}{108}, \frac{56}{72}, \frac{480}{640}$$.

Сократим каждую дробь:

1. $$\frac{5}{10} = \frac{5:5}{10:5} = \frac{1}{2}$$
2. $$\frac{14}{63} = \frac{14:7}{63:7} = \frac{2}{9}$$
3. $$\frac{72}{108} = \frac{72:36}{108:36} = \frac{2}{3}$$
4. $$\frac{56}{72} = \frac{56:8}{72:8} = \frac{7}{9}$$
5. $$\frac{480}{640} = \frac{480:160}{640:160} = \frac{3}{4}$$