211. Сократите дробь: 1) \(\frac{3}{12}\); 2) \(\frac{4}{12}\); 3) \(\frac{6}{54}\); 4) \(\frac{25}{70}\); 5) \(\frac{26}{65}\); 6) \(\frac{12}{60}\); 7) \(\frac{36}{48}\); 8) \(\frac{35}{105}\); 9) \(\frac{480}{720}\); 10) \(\frac{204}{306}\).

1. \(\frac{3}{12}=\frac{1}{4}\);
2. \(\frac{4}{12}=\frac{1}{3}\);
3. \(\frac{6}{54}=\frac{1}{9}\);
4. \(\frac{25}{70}=\frac{5}{14}\);
5. \(\frac{26}{65}=\frac{2}{5}\);
6. \(\frac{12}{60}=\frac{1}{5}\);
7. \(\frac{36}{48}=\frac{3}{4}\);
8. \(\frac{35}{105}=\frac{1}{3}\);
9. \(\frac{480}{720}=\frac{2}{3}\);
10. \(\frac{204}{306}=\frac{2}{3}\).

Ответ: \(\frac14;\ \frac13;\ \frac19;\ \frac5{14};\ \frac25;\ \frac15;\ \frac34;\ \frac13;\ \frac23;\ \frac23\).