Question

(\(-2^3\)) . ( \(\dfrac{3}{4}\) - 0, 25 ): ( \(2\dfrac{1}{4}\) - \(1\dfrac{1}{6}\) )

( \(3\dfrac{1}{3}\) + 2, 5 ) : ( \(3\dfrac{1}{6}\) - \(4\dfrac{1}{5}\) ) - \(\dfrac{11}{31}\)

Answer 1

a: \(=-8\cdot\left(\dfrac{3}{4}-\dfrac{1}{4}\right):\left(\dfrac{9}{4}-\dfrac{7}{6}\right)\)

\(=-8\cdot\dfrac{1}{2}:\dfrac{27-14}{12}\)

\(=-4\cdot\dfrac{12}{13}=\dfrac{-48}{13}\)

b: \(=\left(\dfrac{10}{3}+\dfrac{5}{2}\right):\left(\dfrac{19}{6}-\dfrac{21}{5}\right)-\dfrac{11}{31}\)

\(=\dfrac{35}{6}:\dfrac{-31}{30}-\dfrac{11}{31}\)

\(=\dfrac{-35}{6}\cdot\dfrac{30}{31}-\dfrac{11}{31}=-6\)