Question

so sanh so huu ti nhanh nhat 

b] \(\frac{127}{-128}\)và \(\frac{-1345}{1244}\);

c] \(\frac{-11}{33}\)và \(\frac{25}{-76}\);

d] \(\frac{-17}{23}\)và \(\frac{-171717}{232323}\)

Answer 1

b] \(\frac{127}{-128}>-1\)\(;\)\(\frac{-1345}{1244}< -1\)

\(\Rightarrow\frac{127}{-128}>-1>\frac{-1345}{1244}\Rightarrow\frac{127}{-128}>\frac{-1345}{1244}\)

c]\(\frac{-11}{33}=\frac{-1}{3}\)\(;\)\(\frac{25}{-76}>\frac{25}{-75}=\frac{-1}{3}\)\(\Rightarrow\frac{-11}{33}=\frac{-1}{3}< \frac{25}{-76}\Rightarrow\frac{-11}{33}< \frac{25}{-76}\)

d] \(\frac{-171717}{232323}=\frac{-17\times10101}{23\times10101}=\frac{-17}{23}\)\(\Rightarrow\frac{-17}{23}=\frac{-171717}{232323}\)