[tex] \frac{32}{36} = \frac{8}{9} [/tex]
[tex] \frac{70}{77} = \frac{10}{11} [/tex]
[tex] \frac{36}{42} = \frac{6}{7} [/tex]
[tex] \frac{81}{72} = \frac{9}{8} [/tex]
