\[\left( {\frac{7}{{12}} - \frac{3}{8}} \right):\left( {\frac{5}{6} - \frac{1}{3}} \right)\]

\[\left( {{{\left( {1\frac{2}{5}} \right)}^2} - 1,6} \right):0,12\]

\[3\frac{7}{{11}}:2\frac{{14}}{{33}}\]

\[3\frac{1}{{13}}:2\frac{3}{{26}}\]

\[\left( {1\frac{{14}}{{17}} - 1\frac{1}{{34}}} \right) \cdot 34\]

\[3\frac{4}{7} \cdot 16\frac{5}{8} - 3\frac{4}{7} \cdot 9\frac{5}{8}\]