Question

tính hợp lý nếu có thể

a)\(\left(\dfrac{-6}{11}\right).\dfrac{7}{10}.\left(\dfrac{11}{-6}\right).\left(-20\right)\)

b)\(\left(-1\dfrac{1}{2}\right):\dfrac{3}{4}.\left(-4\dfrac{1}{2}\right)\)

Answer 1

a: \(\dfrac{-6}{11}\cdot\dfrac{-11}{6}\cdot\dfrac{7}{10}\cdot\left(-20\right)=-7\cdot2=-14\)

b: \(=\dfrac{-3}{2}\cdot\dfrac{4}{3}\cdot\dfrac{-9}{2}=2\cdot\dfrac{-9}{2}=-9\)