281. Выполните вычитание: 1) 4 3/16 − 5/8; 2) 6 4/9 − 3 6/7; 3) 10 11/24 − 8 19/36; 4) 9 1/6 − 5 3/4.

1. \(4\frac{3}{16}-\frac{5}{8}=4\frac{3}{16}-\frac{10}{16}=3\frac{9}{16}\).
2. \(6\frac{4}{9}-3\frac{6}{7}=6\frac{28}{63}-3\frac{54}{63}=2\frac{37}{63}\).
3. \(10\frac{11}{24}-8\frac{19}{36}=10\frac{33}{72}-8\frac{38}{72}=1\frac{67}{72}\).
4. \(9\frac{1}{6}-5\frac{3}{4}=9\frac{2}{12}-5\frac{9}{12}=3\frac{5}{12}\).

Ответ: 1) \(3\frac{9}{16}\); 2) \(2\frac{37}{63}\); 3) \(1\frac{67}{72}\); 4) \(3\frac{5}{12}\).