Question

so sánh: 

có lời giải chi tiết

Answer 1

\(\dfrac{-251}{138}=\dfrac{-276+25}{138}=-2+\dfrac{25}{138}\)

\(\dfrac{-317}{171}=\dfrac{-342+25}{171}=-2+\dfrac{25}{171}\)

Thấy : \(\dfrac{25}{138}>\dfrac{25}{171}\Rightarrow\dfrac{-251}{138}>\dfrac{-317}{171}\)