\(\left(3\dfrac{1}{3}+2,5\right)\) : (\(\left(3\dfrac{1}{6}-4\dfrac{1}{5}\right)\) - \(\frac{11}{31}\)
=(\(\frac{10}{3}\)+2,5) : (\(\frac{19}{6}\) -\(\frac{21}{5}\)) -\(\frac{11}{31}\)
=\(\frac{35}{6}\) : \(\frac{-31}{30}\) - \(\frac{11}{31}\) = - \(\frac{175}{31}\) - \(\frac{11}{31}\) = - 6