Ответ:
а) \(6\frac{5}{6}+2\frac{3}{8}=8+\left(\frac{5}{6}+\frac{3}{8}\right)=8+\left(\frac{20}{24}+\frac{9}{24}\right)=8\frac{29}{24}=9\frac{5}{24}\).
б) \(3\frac{3}{5}-2\frac{6}{7}=1+\frac{3}{5}-\frac{6}{7}=1+\frac{21}{35}-\frac{30}{35}=\frac{26}{35}\).
в) \(\frac{5}{6}+\frac{3}{8}-\frac{1}{3}=\frac{20}{24}+\frac{9}{24}-\frac{8}{24}=\frac{21}{24}=\frac{7}{8}\).
Ответ: а) \(9\frac{5}{24}\); б) \(\frac{26}{35}\); в) \(\frac{7}{8}\).
