18. \[\frac{35}{6} = 5 \frac{5}{6}\]\[\frac{28}{6} = 4 \frac{4}{6} = 4 \frac{2}{3}\]
19. \[\frac{11}{5} + \frac{8}{5} = \frac{19}{5} = 3 \frac{4}{5}\]
20. \(\frac{19}{9} + \frac{10}{9} = \frac{29}{9} = 3 \frac{2}{9}\)
21. \(\frac{9}{7} + \frac{6}{7} = \frac{15}{7} = 2 \frac{1}{7}\)
22. \(\frac{41}{7} + \frac{22}{7} = \frac{63}{7} = 9\)
23. \(\frac{47}{9} - \frac{2}{9} = \frac{45}{9} = 5\)
24. \(\frac{38}{5} - \frac{3}{5} = \frac{35}{5} = 7\)
25. \(\frac{29}{8} - \frac{5}{8} = \frac{24}{8} = 3\)
26. \(\frac{26}{5} - \frac{18}{5} = \frac{8}{5} = 1 \frac{3}{5}\)
27. \(\frac{28}{6} - \frac{23}{6} = \frac{5}{6}\)
28. \(\frac{17}{4} - \frac{14}{4} = \frac{3}{4}\)
29. \(\frac{30}{105} = \frac{2}{7}\)
30. \(\frac{12}{15} = \frac{4}{5}\)
31. \(\frac{55}{77} = \frac{5}{7}\)
32. \(\frac{8}{14} = \frac{4}{7}\)