\(\dfrac{\left(-1\right)^3}{15}+\left(-\dfrac{2}{3}\right)^2:2\dfrac{2}{3}-\left|-\dfrac{5}{6}\right|\\ =\dfrac{-1}{15}+\dfrac{4}{9}:\dfrac{8}{3}-\dfrac{5}{6}\\ =\dfrac{-1}{15}+\dfrac{1}{6}-\dfrac{5}{6}\\ \dfrac{1}{10}-\dfrac{5}{6}\\ =\dfrac{-11}{15}\)
\(\dfrac{\left(-1\right)^3}{15}+\left(-\dfrac{2}{3}\right)^2:2\dfrac{2}{3}-\left|-\dfrac{5}{6}\right|\)
\(=\dfrac{-1}{15}+\dfrac{4}{9}:\dfrac{8}{3}-\dfrac{5}{6}\)
\(=\dfrac{-1}{15}+\dfrac{4}{9}\times\dfrac{3}{8}-\dfrac{5}{6}\)
\(=\dfrac{-1}{15}+\dfrac{1}{6}-\dfrac{5}{6}\)
\(=\dfrac{-6}{90}+\dfrac{15}{90}-\dfrac{5}{6}\)
\(=\dfrac{1}{10}-\dfrac{5}{6}\)
\(=\dfrac{6}{60}-\dfrac{50}{60}\)
\(=\dfrac{-11}{15}\)
