\(\dfrac{333}{337}=\dfrac{337}{337}-\dfrac{4}{337}=1-\dfrac{4}{337}\\ \dfrac{277}{281}=\dfrac{281}{281}-\dfrac{4}{281}=1-\dfrac{4}{281}\\ \)
Ta thấy : \(\dfrac{4}{337}< \dfrac{4}{281}\)
\(=>1-\dfrac{4}{337}>1-\dfrac{4}{281}\\ =>\dfrac{333}{337}>\dfrac{277}{281}\)