Ответ:
а) \(2\frac{1}{3}+3\frac{5}{8}−1\frac{1}{2}=\frac{56}{24}+\frac{89}{24}−\frac{36}{24}=\frac{109}{24}=4\frac{13}{24}\).
б) \(5\frac{3}{4}−2\frac{2}{3}+1\frac{5}{12}=\frac{69}{12}−\frac{32}{12}+\frac{17}{12}=\frac{54}{12}=4\frac{1}{2}\).
в) \(1\frac{2}{3}\cdot2\frac{1}{2}:\frac{7}{10}=\frac{5}{3}\cdot\frac{5}{2}\cdot\frac{10}{7}=\frac{125}{21}=5\frac{20}{21}\).
г) \(4\frac{2}{3}:1\frac{1}{6}\cdot\frac{3}{8}=\frac{14}{3}\cdot\frac{6}{7}\cdot\frac{3}{8}=\frac{3}{2}=1\frac{1}{2}\).
Ответ: а) \(4\frac{13}{24}\); б) \(4\frac{1}{2}\); в) \(5\frac{20}{21}\); г) \(1\frac{1}{2}\).
