Cách giải:
26/78=13/36
13/36=13x53/36x53=689/1708
18/53=18x36/53x36=648/1708
=>26/78>18/53
Chúc bạn học tốt!
Ta có:
\(\frac{18}{53}=\frac{18.79}{53.79}=\frac{1422}{4187}\)
\(\frac{26}{79}=\frac{26.53}{79.53}=\frac{1378}{4187}\)
Ta có: \(1422>1378\)
\(\Rightarrow\frac{1422}{4187}>\frac{1378}{4187}\)
\(\Rightarrow\frac{18}{53}>\frac{26}{79}\)