Question

Answer 1

Bài 1.5:

a \(=\dfrac{-4}{2}=-2\)

b: \(=1\cdot\dfrac{2}{2}\cdot\dfrac{3}{3}\cdot\dfrac{1}{4}=\dfrac{1}{4}\)

c: \(=15\cdot\dfrac{7}{3}\cdot\dfrac{1}{14}=\dfrac{15}{3}\cdot\dfrac{7}{14}=\dfrac{5}{2}\)

d: \(=\dfrac{3}{2}\cdot2\cdot\dfrac{2022}{2021}=3\cdot\dfrac{2022}{2021}=\dfrac{6066}{2021}\)