ta có:2/-7=-22/77
-3/11=-21/77
vì -22<-21 nên -22/77<-21/77
\(x=\frac{-2}{7}=\frac{-22}{77}\)
\(y=\frac{-3}{11}=\frac{-21}{77}\)
mà -22 < -21
=> x < y
\(\frac{2}{-7}\)= \(\frac{-2}{7}=\frac{-22}{77}\)
\(\frac{-3}{11}=\frac{-21}{77}\)
x < y vì -21 > -22