377. Выполните вычитание: а) 1 − 3/4; б) 2 − 5/6; в) 9 − 11/12; г) 7 − 1 7/8; д) 5 − 2 2/5; е) 6 − 5 5/8; ж) 8 3/11 − 4; з) 5 7/15 − 3/20; и) 1 5/12 − 9/10; к) 6 3/10 − 11/15; л) 5 7/8 − 9/10; м) 7 5/12 − 3 2/9; н) 10 1/2 − 4 9/14; о) 7 4/7 − 5 7/9; п) 2 3/10 − 1 11/15; р) 5 3/8 − 3 5/6.

1. \(1-\frac{3}{4}=\frac{4}{4}-\frac{3}{4}=\frac{1}{4}\).
2. \(2-\frac{5}{6}=\frac{12}{6}-\frac{5}{6}=\frac{7}{6}=1\frac{1}{6}\).
3. \(9-\frac{11}{12}=8\frac{12}{12}-\frac{11}{12}=8\frac{1}{12}\).
4. \(7-1\frac{7}{8}=5\frac{8}{8}-\frac{7}{8}=5\frac{1}{8}\).
5. \(5-2\frac{2}{5}=2\frac{5}{5}-\frac{2}{5}=2\frac{3}{5}\).
6. \(6-5\frac{5}{8}=\frac{48}{8}-\frac{45}{8}=\frac{3}{8}\).
7. \(8\frac{3}{11}-4=4\frac{3}{11}\).
8. \(5\frac{7}{15}-\frac{3}{20}=5+\frac{28}{60}-\frac{9}{60}=5\frac{19}{60}\).
9. \(1\frac{5}{12}-\frac{9}{10}=1+\frac{25}{60}-\frac{54}{60}=\frac{71}{60}-\frac{54}{60}=\frac{17}{60}\).
10. \(6\frac{3}{10}-\frac{11}{15}=6+\frac{9}{30}-\frac{22}{30}=5\frac{17}{30}\).
11. \(5\frac{7}{8}-\frac{9}{10}=5+\frac{35}{40}-\frac{36}{40}=5\frac{39}{40}\).
12. \(7\frac{5}{12}-3\frac{2}{9}=4+\frac{15}{36}-\frac{8}{36}=4\frac{7}{36}\).
13. \(10\frac{1}{2}-4\frac{9}{14}=10\frac{7}{14}-4\frac{9}{14}=5\frac{21}{14}-4\frac{9}{14}=5\frac{12}{14}=5\frac{6}{7}\).
14. \(7\frac{4}{7}-5\frac{7}{9}=6\frac{36}{63}-5\frac{49}{63}=1\frac{50}{63}\).
15. \(2\frac{3}{10}-1\frac{11}{15}=1+\frac{9}{30}-\frac{22}{30}=\frac{17}{30}\).
16. \(5\frac{3}{8}-3\frac{5}{6}=4\frac{18}{48}-3\frac{40}{48}=\frac{26}{48}=\frac{13}{24}\).

Ответ: а) \(\frac{1}{4}\); б) \(1\frac{1}{6}\); в) \(8\frac{1}{12}\); г) \(5\frac{1}{8}\); д) \(2\frac{3}{5}\); е) \(\frac{3}{8}\); ж) \(4\frac{3}{11}\); з) \(5\frac{19}{60}\); и) \(\frac{17}{60}\); к) \(5\frac{17}{30}\); л) \(5\frac{39}{40}\); м) \(4\frac{7}{36}\); н) \(5\frac{6}{7}\); о) \(1\frac{50}{63}\); п) \(\frac{17}{30}\); р) \(\frac{13}{24}\).