Ta có: \(\frac{-3}{5}=\frac{-3\cdot16}{5\cdot16}=\frac{-48}{80};\frac{4}{-8}=\frac{-4}{8}=\frac{-4\cdot10}{8\cdot10}=\frac{-40}{80}\)
\(\frac54=\frac{5\cdot20}{4\cdot20}=\frac{100}{80};\frac{3}{-10}=\frac{-3}{10}=\frac{-3\cdot8}{10\cdot8}=-\frac{24}{80}\) ;
\(\frac{-12}{30}=\frac{-12:6}{30:6}=\frac{-2}{5}=\frac{-2\cdot16}{5\cdot16}=\frac{-32}{80}\)
\(\frac32=\frac{3\cdot40}{2\cdot40}=\frac{120}{80}\)
mà \(-\frac{48}{80}<-\frac{40}{80}<-\frac{32}{80}<-\frac{24}{80}<\frac{100}{80}<\frac{120}{80}\)
nên \(-\frac35<-\frac12<-\frac25<\frac{3}{-10}<\frac54<\frac32\)
