210. Сократите дроби: 1) \(\frac{5}{15}\); 2) \(\frac{6}{20}\); 3) \(\frac{14}{35}\); 4) \(\frac{21}{39}\); 5) \(\frac{10}{60}\); 6) \(\frac{28}{84}\); 7) \(\frac{56}{72}\); 8) \(\frac{20}{25}\); 9) \(\frac{120}{180}\); 10) \(\frac{207}{243}\).

В каждой дроби делим числитель и знаменатель на их наибольший общий делитель.

1. \(\frac{5}{15}=\frac{1}{3}\).
2. \(\frac{6}{20}=\frac{3}{10}\).
3. \(\frac{14}{35}=\frac{2}{5}\).
4. \(\frac{21}{39}=\frac{7}{13}\).
5. \(\frac{10}{60}=\frac{1}{6}\).
6. \(\frac{28}{84}=\frac{1}{3}\).
7. \(\frac{56}{72}=\frac{7}{9}\).
8. \(\frac{20}{25}=\frac{4}{5}\).
9. \(\frac{120}{180}=\frac{2}{3}\).
10. \(\frac{207}{243}=\frac{23}{27}\).