4. Выполните вычитание: 1) 3 1/16 − 1/8; 2) 7 9/20 − 5 17/30; 3) 4 2/7 − 1 4/9; 4) 8 5/36 − 1 43/108; 5) 9 7/9 − 4 5/6; 6) 6 7/32 − 2 11/48.

1. \(3\frac{1}{16}-\frac{1}{8}=3\frac{1}{16}-\frac{2}{16}=2\frac{15}{16}\).
2. \(7\frac{9}{20}-5\frac{17}{30}=2+\frac{27}{60}-\frac{34}{60}=1\frac{53}{60}\).
3. \(4\frac{2}{7}-1\frac{4}{9}=3+\frac{18}{63}-\frac{28}{63}=2\frac{53}{63}\).
4. \(8\frac{5}{36}-1\frac{43}{108}=7+\frac{15}{108}-\frac{43}{108}=6\frac{80}{108}-\frac{43}{108}=6\frac{37}{108}\).
5. \(9\frac{7}{9}-4\frac{5}{6}=5+\frac{14}{18}-\frac{15}{18}=4\frac{17}{18}\).
6. \(6\frac{7}{32}-2\frac{11}{48}=4+\frac{21}{96}-\frac{22}{96}=3\frac{95}{96}\).

Ответ: 1) 2 15/16; 2) 1 53/60; 3) 2 53/63; 4) 6 37/108; 5) 4 17/18; 6) 3 95/96.