\[\frac{9}{32} - \left( \frac{1}{4} + \frac{1}{32} \right) = \frac{9}{32} - \frac{1}{32} - \frac{1}{4} =\]
\[= \frac{8}{32} - \frac{1}{4} = \frac{1}{4} - \frac{1}{4} = 0.\]