$\dfrac{13}{17}\times\dfrac{6}{4}$ =

$2 \times\dfrac{10}{4}$ =

$\dfrac{11}{19}\times\dfrac{6}{4}$ =

$\dfrac{19}{-11}\times\dfrac{1}{-6}$ =

$\dfrac{7}{5}\times\dfrac{3}{2}$ =

$7 \times\dfrac{14}{-49}$ =

$\dfrac{15}{7}\times\dfrac{33}{25}$ =

$\dfrac{7}{66}\times 7$ =

$\dfrac{6}{7}\times\dfrac{5}{11}$ =

$\dfrac{5}{11}\times\dfrac{2}{7}$ =