Question

Giúp mình với

So sánh 

a, \(\frac{-21}{25}\)VÀ \(\frac{-123}{167}\)

b, \(\frac{1999}{2000}\) VÀ \(\frac{199}{200}\)

Answer 1

a) ta có: \(1+\frac{-21}{25}=\frac{4}{25}=\frac{44}{375};1+\frac{-123}{167}=\frac{44}{167}.\)

\(\Rightarrow\frac{44}{375}< \frac{44}{167}\Rightarrow1+\frac{-21}{25}< 1+\frac{-123}{375}\Rightarrow\frac{-21}{25}< \frac{-123}{375}\)

b) ta có: \(\frac{199}{200}=\frac{1990}{2000}\)

=> ...

Answer 2

\(\frac{-123}{167}\)lớn hơn \(\frac{-21}{25}\)

\(\frac{199}{200}\)nhỏ hơn\(\frac{1999}{2000}\)