Сократите дроби: 1) 3/63; 2) 8/10; 3) 4/96; 4) 1 10/25; 5) 2 14/16; 6) 7 7/84; 7) 21 28/32; 8) 9 12/30; 9) 3 26/30; 10) 3 18/24; 11) 25/75; 12) 42/126; 13) 4 33/77; 14) 8 35/84; 15) 48/72; 16) 6 34/50; 17) 10 15/63; 18) 12 16/20.

Правило: числитель и знаменатель дроби делим на их общий делитель. Целую часть смешанного числа не изменяем.

1. \(\frac{3}{63}=\frac{1}{21}\).
2. \(\frac{8}{10}=\frac{4}{5}\).
3. \(\frac{4}{96}=\frac{1}{24}\).
4. \(1\frac{10}{25}=1\frac{2}{5}\).
5. \(2\frac{14}{16}=2\frac{7}{8}\).
6. \(7\frac{7}{84}=7\frac{1}{12}\).
7. \(21\frac{28}{32}=21\frac{7}{8}\).
8. \(9\frac{12}{30}=9\frac{2}{5}\).
9. \(3\frac{26}{30}=3\frac{13}{15}\).
10. \(3\frac{18}{24}=3\frac{3}{4}\).
11. \(\frac{25}{75}=\frac{1}{3}\).
12. \(\frac{42}{126}=\frac{1}{3}\).
13. \(4\frac{33}{77}=4\frac{3}{7}\).
14. \(8\frac{35}{84}=8\frac{5}{12}\).
15. \(\frac{48}{72}=\frac{2}{3}\).
16. \(6\frac{34}{50}=6\frac{17}{25}\).
17. \(10\frac{15}{63}=10\frac{5}{21}\).
18. \(12\frac{16}{20}=12\frac{4}{5}\).

Ответ: 1) \(\frac{1}{21}\); 2) \(\frac{4}{5}\); 3) \(\frac{1}{24}\); 4) \(1\frac{2}{5}\); 5) \(2\frac{7}{8}\); 6) \(7\frac{1}{12}\); 7) \(21\frac{7}{8}\); 8) \(9\frac{2}{5}\); 9) \(3\frac{13}{15}\); 10) \(3\frac{3}{4}\); 11) \(\frac{1}{3}\); 12) \(\frac{1}{3}\); 13) \(4\frac{3}{7}\); 14) \(8\frac{5}{12}\); 15) \(\frac{2}{3}\); 16) \(6\frac{17}{25}\); 17) \(10\frac{5}{21}\); 18) \(12\frac{4}{5}\).