$-6 \times\dfrac{5}{15}$ =

$\dfrac{3}{8}\times\dfrac{11}{5}$ =

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

$\dfrac{15}{10}\times\dfrac{11}{7}$ =

$\dfrac{7}{20}\times\dfrac{35}{12}$ =

$\dfrac{7}{18}\times\dfrac{5}{2}$ =

$\dfrac{-3}{2}\times\dfrac{-5}{8}$ =

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

$\dfrac{17}{28}\times 1$ =

$\dfrac{11}{15}\times\dfrac{25}{7}$ =