Question

So sánh 2 phân số sau : \(\frac{19}{18}\)và \(\frac{2005}{2004}\)

Answer 1

Ta có :

  19/18 = 19/19 - 18/19 = 1/19

   2005/2004 = 2005/2005 - 2004/2005 = 1/2005

Ta thấy 1/19 > 1/2005 Vậy 19/18 < 2005/2004

Answer 2

19/18 >2005/2004

Answer 3

\(\frac{19}{18}\)và \(\frac{2005}{2004}\)

\(\frac{19}{18}-1=\frac{1}{18};\frac{2005}{2004}-1=\frac{1}{2004}\)

Vì 18 < 2004 nên \(\frac{1}{18}>\frac{1}{2004}\)nên \(\frac{19}{18}>\frac{2005}{2004}\)

Ủng hộ nhé !