Question

giúp mình làm bài với : 

Answer 1

Bài 2: 

\(A=\left(\dfrac{-11}{2022}+\dfrac{11}{2022}\right)+\left(\dfrac{19}{1999}+\dfrac{18}{1999}\right)=\dfrac{37}{1999}\)

Answer 2

Bài 2: 

\(A=\left(-\dfrac{11}{2022}+\dfrac{11}{2022}\right)+\left(\dfrac{19}{1999}-\dfrac{18}{1999}\right)=\dfrac{1}{1999}\)