$\dfrac{16}{13}\times\dfrac{2}{3}$ =

$\dfrac{6}{4}\times\dfrac{9}{19}$ =

$\dfrac{11}{2}\times\dfrac{7}{15}$ =

$19 \times\dfrac{3}{-19}$ =

$\dfrac{19}{5}\times\dfrac{1}{12}$ =

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

$\dfrac{2}{4}\times\dfrac{23}{3}$ =

$\dfrac{11}{6}\times\dfrac{9}{23}$ =

$\dfrac{3}{38}\times 33$ =

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