Đáp án:
$\begin{array}{l}
\left( {3\dfrac{1}{3}:\dfrac{{33}}{{25}}} \right) - \left( {\dfrac{2}{5}.1\dfrac{1}{3}} \right):\dfrac{4}{3}\\
= \left( {\dfrac{{10}}{3}.\dfrac{{25}}{{33}}} \right) - \dfrac{2}{5}.\dfrac{4}{3}.\dfrac{3}{4}\\
= \dfrac{{250}}{{99}} - \dfrac{2}{5}\\
= \dfrac{{250.5 - 2.99}}{{5.99}}\\
= \dfrac{{1052}}{{495}}
\end{array}$
