\(\frac{51}{52}\)và \(\frac{56}{57}\)
Ta có :
\(\frac{51}{52}=\frac{52-1}{52}=1-\frac{1}{52}\)
\(\frac{56}{57}=\frac{57-1}{57}=1-\frac{1}{57}\)
Mà \(1-\frac{1}{52}< 1-\frac{1}{57}\)hay \(\frac{51}{52}< \frac{56}{57}\)
Vậy \(\frac{51}{52}< \frac{56}{57}\)