\[9\frac{2^{\backslash 2}}{9} - 6\frac{5^{\backslash 3}}{6} = 9\frac{4}{18} - 6\frac{15}{18} =\]
\[= 8\frac{22}{18} - 6\frac{15}{18} = 2\frac{7}{18}\]