2005/2006 < 2006/2007
bn so sánh phần bù đi bn,mk làm theo cách so sánh phần bù
2005/2006=2005x2007/2006x2007=4024035/4026042
2006/2007=2006x2006/2007x2006=4024036/4026042
4024035/4026042<4024036/4026042
Ta có\(\left(-1\right)+\frac{2005}{2006}=\frac{-1}{2006}\)và\(\left(-1\right)+\frac{2005}{2007}=\frac{-1}{2007}\)
Vì\(\frac{-1}{2006}< \frac{-1}{2007}\)
\(\Rightarrow\)\(\frac{2005}{2006}< \frac{2006}{2007}\)