Ta có:
\(\dfrac{-5}{6}\times\dfrac{52}{52}=\dfrac{-260}{312}\)
\(\dfrac{-91}{104}\times\dfrac{3}{3}=\dfrac{-273}{312}\)
Vì -260>-273⇒\(\dfrac{-260}{312}>\dfrac{-273}{312}\Rightarrow\dfrac{-5}{6}>\dfrac{-91}{104}\)
Vậy:\(\dfrac{-5}{6}>\dfrac{-91}{104}\)