Question

[Minfire]

so sánh :       2005/2007 và 2007/2009

Answer 1

[Đinh Tuấn Việt]

Cách 1 :\(1-\frac{2005}{2007}=\frac{2}{2007}\)

\(1-\frac{2007}{2009}=\frac{2}{2009}\)

Vì \(\frac{2}{2007}>\frac{2}{2009}\) nên \(\frac{2005}{2007}

Answer 2

[Katherine Lilly Filbert]

Ta có: \(1-\frac{2005}{2007}=\frac{2}{2007}\)

            \(1-\frac{2007}{2009}=\frac{2}{2009}\)

Vì: \(\frac{2}{2007}\)>\(\frac{2}{2009}\)

Nên \(\frac{2005}{2007}\) < \(\frac{2007}{2009}\)