a)
Có \(\frac{4}{5}< 1\) ; \(1,1>1\)
=> \(\frac{4}{5}< 1,1\)
b)
Có \(-500< 0\) ; \(0,001>0\)
=> \(-500< 0,001\)
c) Có
\(\frac{13}{38}=1-\frac{25}{38}\) ; \(\frac{-12}{-37}=\frac{12}{37}=1-\frac{25}{37}\)
Vì \(\frac{25}{38}< \frac{25}{37}=>1-\frac{25}{38}>1-\frac{25}{37}\)
=> \(\frac{13}{38}>\frac{12}{37}=>\frac{13}{38}>\frac{-12}{-37}\)