Ответ:
а) \(8-3\frac{6}{7}=8-\frac{27}{7}=\frac{56-27}{7}=\frac{29}{7}=4\frac{1}{7}\).
б) \(2\frac{1}{8}+3\frac{5}{12}=5+\frac{1}{8}+\frac{5}{12}=5+\frac{3}{24}+\frac{10}{24}=5\frac{13}{24}\).
в) \(5\frac{13}{15}+1\frac{7}{12}=6+\frac{13}{15}+\frac{7}{12}=6+\frac{52}{60}+\frac{35}{60}=7\frac{27}{60}=7\frac{9}{20}\).
г) \(7\frac{3}{8}-3\frac{5}{6}=4+\frac{3}{8}-\frac{5}{6}=4+\frac{9}{24}-\frac{20}{24}=3\frac{13}{24}\).
Ответ: а) \(4\frac{1}{7}\); б) \(5\frac{13}{24}\); в) \(7\frac{9}{20}\); г) \(3\frac{13}{24}\).
