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$(-2)^3 +1 \dfrac{1}{3} .|2,5|-\sqrt{49}: \dfrac{7}{5}$

$ =-8+\dfrac{4}{3} . 2,5-7: \dfrac{7}{5}$

$=-8+\dfrac{4}{3} . \dfrac{5}{2}-7 . \dfrac{5}{7} =-8+\dfrac{10}{3}-5 $

$ =-8-5+\dfrac{10}{3} =-13+\dfrac{10}{3} = -\dfrac{29}{3}$.