Question

8 phần 9 cộng am 7 phần 29 cộng âm 8 phần 13 cộng 7 phần 29 cộng 2019 phàn 2020

Answer 1

\(\dfrac{8}{9}+\left(\dfrac{-7}{9}\right)+\left(\dfrac{-8}{13}\right)+\dfrac{7}{29}+\dfrac{2019}{2020}\)

 

Answer 2

\(\dfrac{8}{9}+\dfrac{-7}{29}+\dfrac{-8}{13}+\dfrac{7}{29}+\dfrac{2019}{2020}\)

\(=\dfrac{8}{9}-\dfrac{8}{13}+\dfrac{2019}{2020}\)

\(=\dfrac{32}{117}+\dfrac{2019}{2020}=\dfrac{300863}{236340}\)