so sánh ; $\frac{2020}{2019}$ và $\frac{2022}{2021}$

2 câu trả lời

Ta có:

`**\frac{2020}{2019}`

`=\frac{2019+1}{2019}`

`=1+\frac{1}{2019}`

`**\frac{2022}{2021}`

`=\frac{2021+1}{2021}`

`=1+\frac{1}{2021}`

Mà `2019<2021`

`=>\frac{1}{2019}>\frac{1}{2021}`

`=>1+\frac{1}{2019}>1+\frac{1}{2021}`

`=>\frac{2020}{2019}>\frac{2022}{2021}`

Vậy `\frac{2020}{2019}>\frac{2022}{2021}`

 

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