766. Сократите дроби по образцу: в) 2/8, 8/24, 12/28, 45/100;

\(\frac{2}{8}=\frac{2:2}{8:2}=\frac{1}{4}\); \(\frac{8}{24}=\frac{8:8}{24:8}=\frac{1}{3}\); \(\frac{12}{28}=\frac{12:4}{28:4}=\frac{3}{7}\); \(\frac{45}{100}=\frac{45:5}{100:5}=\frac{9}{20}\).

Ответ: \(\frac{1}{4};\ \frac{1}{3};\ \frac{3}{7};\ \frac{9}{20}\).