$\dfrac{19}{2}\times\dfrac{1}{7}$ =

$\dfrac{11}{13}\times\dfrac{25}{15}$ =

$\dfrac{7}{4}\times\dfrac{6}{23}$ =

$\dfrac{2}{39}\times 8$ =

$11 \times\dfrac{14}{77}$ =

$\dfrac{1}{3}\times\dfrac{23}{22}$ =

$15 \times\dfrac{7}{-21}$ =

$\dfrac{15}{7}\times\dfrac{3}{11}$ =

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

$\dfrac{7}{10}\times\dfrac{35}{23}$ =