a) [tex] \frac{5}{6} =\frac{2}{6} + \frac{3}{6}= \frac{4}{6}+ \frac{1}{6} =[tex] \frac{2}{6} + \frac{1}{6} + \frac{2}{6} [/tex]
[tex] \frac{37}{54}= \frac{30}{54} + \frac{7}{54}= \frac{21}{54} + \frac{8}{54} + \frac{8}{54} = \frac{19}{54}+ \frac{18}{54} [/tex]