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Đáp án:

$\begin{array}{l}
a)\dfrac{{ - 2}}{9}:\dfrac{8}{{36}} - \dfrac{4}{{15}}.\dfrac{3}{5}\\
 = \dfrac{{ - 2}}{9}.\dfrac{{36}}{8} - \dfrac{4}{{25}}\\
 =  - 1 - \dfrac{4}{{25}}\\
 =  - \dfrac{{29}}{{25}}\\
b)\dfrac{3}{7}.\dfrac{2}{7} - \dfrac{2}{7}.\dfrac{{10}}{3} - \dfrac{2}{7}\\
 = \dfrac{2}{7}.\left( {\dfrac{3}{7} - \dfrac{{10}}{3} - 1} \right)\\
 = \dfrac{2}{7}.\dfrac{{ - 82}}{{21}}\\
 =  - \dfrac{{164}}{{147}}\\
c)\left( {0,5 - \dfrac{1}{4}} \right):\dfrac{3}{2} - \dfrac{5}{{12}}:\dfrac{{10}}{3}\\
 = \left( {\dfrac{1}{2} - \dfrac{1}{4}} \right).\dfrac{2}{3} - \dfrac{5}{{12}}.\dfrac{3}{{10}}\\
 = \dfrac{1}{4}.\dfrac{2}{3} - \dfrac{1}{8}\\
 = \dfrac{1}{6} - \dfrac{1}{8}\\
 = \dfrac{1}{{24}}\\
d)\dfrac{{\dfrac{3}{5} + \dfrac{3}{7} - \dfrac{3}{{11}}}}{{\dfrac{6}{5} + \dfrac{6}{7} - \dfrac{6}{{11}}}}\\
 = \dfrac{{3.\left( {\dfrac{1}{5} + \dfrac{1}{7} - \dfrac{1}{{11}}} \right)}}{{6.\left( {\dfrac{1}{5} + \dfrac{1}{7} - \dfrac{1}{{11}}} \right)}}\\
 = \dfrac{3}{6} = \dfrac{1}{2}
\end{array}$