\[\frac{5}{9} \cdot \left( - 3\frac{6}{7} \right) - \left( - 3\frac{5}{7} \right) \cdot \frac{3}{52} =\]
\[= - \frac{5}{9} \cdot \frac{27}{7} + \frac{26}{7} \cdot \frac{3}{52} =\]
\[= - \frac{15}{7} + \frac{3}{14} =\]
\[= - \left( \frac{30}{14} - \frac{3}{14} \right) = - \frac{27}{14} = - 1\frac{13}{14}\]