Đáp án:
2004/2005+2005/2006>N=2004+2005/2005+2006
Giải thích các bước giải:
Ta có:
N=2004/2005+2005/2006=2004/2005+2006 + 2005/2005+2006
Bởi vì 2004/2005>2004/2005+2006;2005/2006>2005/2005+2006
Nên 2004/2005+2005/2006> 2004/2005+2006 + 2005/2005+2006
⇒2004/2005+2005/2006>N=2004+2005/2005+2006
Vậy 2004/2005+2005/2006>N=2004+2005/2005+2006