\(A=\dfrac{2021}{2022}\times\dfrac{7}{8}+\dfrac{2021}{2022}\times\dfrac{3}{8}-\dfrac{2021}{2022}\times\dfrac{1}{4}\)
\(A=\dfrac{2021}{2022}\times\left(\dfrac{7}{8}+\dfrac{3}{8}-\dfrac{1}{4}\right)\)
\(A=\dfrac{2021}{2022}\times\left(\dfrac{7}{8}+\dfrac{3}{8}-\dfrac{2}{8}\right)\)
\(A=\dfrac{2021}{2022}\)