\[5\frac{3}{7} - \left( 2\frac{1^{\backslash 3}}{2} + 1\frac{1^{\backslash 2}}{3} \right)\ :\frac{1}{6} =\]
\[= 5\frac{3}{7} - \left( 2\frac{3}{6} + 1\frac{2}{6} \right) \cdot 6 =\]
\[= 5\frac{3}{7} - 3\frac{5}{6} \cdot 6 = 5\frac{3}{7} - \frac{23}{6} \cdot 6 =\]
\[= 5\frac{3}{7} - 23 = 5\frac{3}{7} - 22\frac{7}{7} = - 17\frac{4}{7}.\]