3. Найдите разность: 1) 7 5/6 − 3 2/3; 2) 8 5/12 − 6 7/20; 3) 11 11/12 − 5 7/9; 4) 9 17/24 − 8 11/36.

\(7\frac{5}{6}-3\frac{2}{3}=4\frac{1}{6}\).

\(8\frac{5}{12}-6\frac{7}{20}=2+\frac{25}{60}-\frac{21}{60}=2\frac{1}{15}\).

\(11\frac{11}{12}-5\frac{7}{9}=6+\frac{33}{36}-\frac{28}{36}=6\frac{5}{36}\).

\(9\frac{17}{24}-8\frac{11}{36}=1+\frac{51}{72}-\frac{22}{72}=1\frac{29}{72}\).