Question

( 2 và 1/5 . 3/19 . 2/31) : (-5/19)

Answer 1

\(\left(2\dfrac{1}{5}\cdot\dfrac{3}{19}\cdot\dfrac{2}{31}\right):\left(\dfrac{-5}{19}\right)\\ =\left(\dfrac{11}{5}\cdot\dfrac{2}{31}\cdot\dfrac{3}{19}\right)\cdot\dfrac{-19}{5}\\ =\dfrac{11}{5}\cdot\dfrac{2}{31}\cdot\dfrac{-3}{5}\\ =\dfrac{-66}{775}\)