Как решить пример (1/8+2/9-1/4)*5 1/7:(7/9-2/3+1/6)

[latex]( \frac{1}{8} + \frac{2}{9} - \frac{2}{8} ) * \frac{36}{7} : ( \frac{7}{9} - \frac{6}{9} + \frac{1}{6} ) = ( \frac{2}{9} - \frac{1}{8} ) * \frac{36}{7} : ( \frac{1}{9} + \frac{1}{6} ) = [/latex][latex]( \frac{16}{72} - \frac{9}{72} ) * \frac{36}{7} : ( \frac{2}{18} + \frac{3}{18} ) = \frac{7}{72} * \frac{36}{7} * \frac{18}{5} = \frac{36}{72} * \frac{18}{5} = \frac{9}{5} = 1 \frac{4}{5} [/latex]