\(A=\dfrac{-3}{11}\times\dfrac{5}{7}+\dfrac{-5}{7}\times\dfrac{8}{11}+2\dfrac{5}{7}:\dfrac{2021}{2022}+2023\)
\(=-\dfrac{3}{11}\times\dfrac{5}{7}+\dfrac{5}{7}\times\dfrac{-8}{11}+\dfrac{5}{7}.\dfrac{2022}{2021}+2023+2\)
\(=\dfrac{5}{7}\times\left(-\dfrac{3}{11}-\dfrac{8}{11}+\dfrac{2022}{2021}\right)+2025\)
\(=\dfrac{5}{7}\times\left(-1+\dfrac{2022}{2021}\right)+2025\)
\(=\dfrac{5}{7}\times\left(-\dfrac{2021}{2021}+\dfrac{2022}{2021}\right)+2025\)
\(=\dfrac{5}{7}\times\dfrac{1}{2021}+2025\)
\(=\dfrac{5}{14147}+2025\)
Mong bạn kiểm tra lại đề bài!!!
\(A=\dfrac{-3}{11}\times\dfrac{5}{7}+\dfrac{-5}{7}\times\dfrac{8}{11}+2\dfrac{5}{7}:\dfrac{2021}{2022}+2023\)
\(A=-\dfrac{5}{7}\times\left(\dfrac{-3}{11}+\dfrac{-8}{11}\right)+\dfrac{19}{7}:\dfrac{2021}{2022}+2023\)
\(A=\dfrac{5}{7}\times-1+\dfrac{19}{7}\times\dfrac{2022}{2021}+2023\)
\(A=-\dfrac{5}{7}+\dfrac{-19}{5}\times\dfrac{-5}{7}\times\dfrac{2022}{2021}+2023\)
\(A=-\dfrac{5}{7}\times\left(1+\dfrac{-19}{5}\times\dfrac{2022}{2021}\right)+2023\)
\(A=-\dfrac{5}{7}\times-1,71+2023\)
\(A=1,23+2023\)
\(A\approx2024\)
