Ta có:1-1995/1996=1/1996
1-1996/1997=1/1997
Vì 1/1996>1/1997=>1995/1996<1996/1997
b, 2121/3737=2121/101=21
3737/101=37
212121/373737=212121/10101=21
373737/10101=37
=>2121/3737=212121/373737
a) \(\dfrac{1995}{1996}\) < \(\dfrac{1996}{1997}\)
b) \(\dfrac{2121}{3737}\) = \(\dfrac{212121}{373737}\)