a,\(\frac{-3}{8}\) và \(\frac{5}{_{-12}}\)
= \(\frac{-9}{24}\) ; \(\frac{-10}{24}\)
-9 > -10
Vì -9 > -10 nên \(\frac{-3}{8}\) > \(\frac{5}{-12}\)
b, \(\frac{3131}{5252}\) và \(\frac{31}{52}\)
=\(\frac{31}{52}\) ; \(\frac{31}{52}\)
=\(\frac{31}{52}\) = \(\frac{31}{52}\)
Vì \(\frac{31}{52}\) = \(\frac{31}{52}\) nên \(\frac{3131}{5252}\) = \(\frac{31}{52}\)