[tex]a) 6-\frac{5}{12} =\frac{72}{12} -\frac{5}{12} =\frac{67}{12} =5\frac{7}{12} \\b) 5\frac{6}{7} -3\frac{2}{7}=\frac{41}{7} -\frac{23}{7} = \frac{18}{7} =2\frac{4}{7} \\c) 9\frac{1}{6} -7\frac{5}{6}=\frac{55}{6} -\frac{47}{6} =\frac{8}{6}=1\frac{2}{6}[/tex]
