а) \( 8\frac{9}{11} - 3\frac{5}{11} = 5\frac{4}{11} \).
 б) \( 6\frac{5}{8} - 4 = 2\frac{5}{8} \).
 в) \( 9 - \frac{5}{6} = 8\frac{1}{6} \).
 г) \( 9 - 3\frac{5}{8} = 8\frac{8}{8} - 3\frac{5}{8} = 5\frac{3}{8} \).
 д) \( 8\frac{2}{7} - 3\frac{5}{7} = 7\frac{9}{7} - 3\frac{5}{7} = 4\frac{4}{7} \).
 е) \( 8\frac{3}{8} - 5\frac{5}{8} = 7\frac{11}{8} - 5\frac{5}{8} = 2\frac{6}{8} = 2\frac{3}{4} \).