215/216 và 104/105
\(\dfrac{215}{216}=\dfrac{22575}{22680}\)
\(\dfrac{104}{105}=\dfrac{22464}{22680}\)
Vì 22575 > 22464
= > \(\dfrac{215}{216}>\dfrac{104}{105}\)
-13/17 và-4/26
\(-\dfrac{13}{17}=-\dfrac{338}{442}\)
\(-\dfrac{4}{26}=\dfrac{-68}{442}\)
Vì -68 > -338
=> \(-\dfrac{4}{26}>-\dfrac{13}{17}\)
-5/3 và 15/9
-5/3 < 1
15/9 > 1
=> -5/3 < 15/9