Выполните вычитание: 1) 3 1/16 − 1/8; 3) 4 2/7 − 1 4/9; 5) 9 7/9 − 4 5/6.

1. \(3\frac{1}{16}-\frac{1}{8}=3\frac{1}{16}-\frac{2}{16}=2\frac{15}{16}\).
2. \(4\frac{2}{7}-1\frac{4}{9}=3+\frac{18}{63}-\frac{28}{63}=2\frac{53}{63}\).
3. \(9\frac{7}{9}-4\frac{5}{6}=5+\frac{14}{18}-\frac{15}{18}=4\frac{17}{18}\).

Ответ: 1) \(2\frac{15}{16}\); 3) \(2\frac{53}{63}\); 5) \(4\frac{17}{18}\).