Ответ:
а) \(2\frac{1}{3}+3\frac{5}{6}-1\frac{1}{6}=\frac{7}{3}+\frac{23}{6}-\frac{7}{6}=\frac{14+23-7}{6}=\frac{30}{6}=5\).
б) \(5\frac{3}{4}-2\frac{2}{3}+1\frac{5}{12}=\frac{23}{4}-\frac{8}{3}+\frac{17}{12}=\frac{69-32+17}{12}=\frac{54}{12}=4\frac{1}{2}\).
в) \(1\frac{2}{3}·2\frac{1}{2}:\frac{7}{10}=\frac{5}{3}·\frac{5}{2}·\frac{10}{7}=\frac{125}{21}=5\frac{20}{21}\).
г) \(4\frac{2}{3}:1\frac{1}{6}·\frac{3}{8}=\frac{14}{3}:\frac{7}{6}·\frac{3}{8}=\frac{14}{3}·\frac{6}{7}·\frac{3}{8}=\frac{3}{2}\).
Ответ: а) 5; б) 4 1/2; в) 5 20/21; г) 3/2.
