\(\dfrac{1909}{1910}\) = 1 -\(\dfrac{1}{1910}\) < 1 - \(\dfrac{1}{1911}\) = \(\dfrac{1910}{1911}\)< 1
\(\dfrac{2021}{2020}\) = 1 + \(\dfrac{1}{2020}\) > 1 + \(\dfrac{1}{2022}\) = \(\dfrac{2022}{2021}\) > 1
vậy sắp xếp từ lớn đến bé các phân số như sau:
\(\dfrac{2021}{2020}\), \(\dfrac{2022}{2021}\), \(\dfrac{1910}{1911}\), \(\dfrac{1909}{1910}\)