[tex] \frac{1}{8} + \frac{1}{9} + \frac{1}{6} = \frac{9 + 8 + 12}{72} = \frac{29}{72} [/tex]
[tex] \frac{7}{36} + \frac{1}{18} + \frac{5}{6} + \frac{3}{4} = \frac{7 + 2 + 30 + 27}{36} = \frac{66}{36} = \frac{11}{6} [/tex]
[tex] \frac{11}{18} + \frac{4}{9} + \frac{5}{6} + \frac{1}{3} = \frac{11 + 8 + 15 + 6}{18} = \frac{40}{18} = \frac{20}{9} [/tex]
