$\displaystyle \frac{25}{9}< \frac{23}{9}$\displaystyle \frac{25}{9}< \frac{23}{9}

$\displaystyle \frac{5}{4}+ \frac{5}{2}<4$\displaystyle \frac{5}{4}+ \frac{5}{2}<4

$\displaystyle \frac{13}{17} \cdot 3> \frac{39}{17}$\displaystyle \frac{13}{17} \cdot 3> \frac{39}{17}

$\displaystyle \frac{11}{12}> \frac{11}{13}$\displaystyle \frac{11}{12}> \frac{11}{13}