\(=-\dfrac{3}{7}\left(\dfrac{5}{11}+\dfrac{6}{11}-3\right)\)
\(=-\dfrac{3}{7}\times\left(-2\right)=\dfrac{6}{7}\)
\(\dfrac{-3}{7}:\dfrac{11}{5}+\dfrac{-3}{7}:\dfrac{11}{6}+\dfrac{\left(-3\right)^2}{7}\)
\(=\dfrac{-3}{7}\cdot\dfrac{5}{11}+\dfrac{-3}{7}\cdot\dfrac{6}{11}+\dfrac{9}{7}\)
\(=\left(\dfrac{-3}{7}+\dfrac{9}{7}\right)\cdot\left(\dfrac{5}{11}+\dfrac{6}{11}\right)\)
\(=\dfrac{6}{7}\cdot1\)
\(=\dfrac{6}{7}\)
\(=\dfrac{3}{7}\times\dfrac{-5}{11}-\dfrac{3}{7}\times\dfrac{6}{11}+\dfrac{3}{7}=\dfrac{3}{7}\cdot\left(-\dfrac{5}{11}-\dfrac{6}{11}+1\right)=\dfrac{3}{7}\cdot0=0\)
