Ta có:
$\dfrac{1}{-38}$ `=` $\dfrac{-1}{38}$
$\dfrac{3737}{-3838}$ `=` $\dfrac{3737:101}{-3838:101}$ `=` $\dfrac{37}{-38}$ `=` $\dfrac{-37}{38}$
Vì `-1>(-37)` `→` $\dfrac{1}{-38}$ `>` $\dfrac{37}{-38}$
Hay $\dfrac{1}{-38}$ `>` $\dfrac{3737}{-3838}$
Vậy $\dfrac{1}{-38}$ `>` $\dfrac{3737}{-3838}$