Question

[Nguyễn Bảo Ngọc]

so sánh :

x=2020/2019 và y=2021/2020

lm giúp tui nhanh vs m.n

Answer 1

[Khách]

x > y

'-'

Answer 2

[Vũ Cao Minh⁀ᶦᵈᵒᶫ ( ✎﹏IDΣΛ亗 )]

Có \(x=\frac{2020}{2019}\) và \(y=\frac{2021}{2020}\). Xét phần hơn

Có \(x-1=\frac{2020}{2019}-1=\frac{2020}{2019}-\frac{2019}{2019}=\frac{1}{2019}\)

Có \(y-1=\frac{2021}{2020}-1=\frac{2021}{2020}-\frac{2020}{2020}=\frac{1}{2020}\)

Vì \(\frac{1}{2019}>\frac{1}{2020}\Leftrightarrow\frac{2020}{2019}>\frac{2021}{2020}\Rightarrow x>y\)