\(\dfrac{-23}{39}\times\dfrac{-13}{56}\times\dfrac{70}{23}:\dfrac{125}{75}\)

\(\dfrac{11}{30}+\dfrac{18}{35}\times\left(\dfrac{35}{54}-\dfrac{49}{18}-\dfrac{28}{48}\right)\)

\(\left(13\dfrac{9}{11}\div\dfrac{38}{49}-5\dfrac{2}{11}\div\dfrac{38}{49}\right)\div\left(\dfrac{49}{38}\times\dfrac{5}{11}\right)\)

\(\dfrac{5}{8}+2\dfrac{1}{4}.1\dfrac{2}{3}-\dfrac{1}{4}.\dfrac{5}{6}\)