\(-\dfrac{5}{14}:\left(\dfrac{4}{21}-\dfrac{3}{7}\right)\cdot\left|\dfrac{-2}{3}\right|-\dfrac{3}{2}\cdot\left(\dfrac{1}{3}-\dfrac{5}{6}\right)+\dfrac{1}{5}:\left(\dfrac{-3}{10}\right)\)
\(=-\dfrac{5}{14}:\left(-\dfrac{5}{21}\right)\cdot\dfrac{2}{3}-\dfrac{3}{2}\cdot\left(-\dfrac{1}{2}\right)+\left(-\dfrac{2}{3}\right)\)
\(=1-\left(-\dfrac{3}{4}\right)+\left(-\dfrac{2}{3}\right)=\dfrac{13}{12}\)
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