$(\dfrac{-2}{9})-\dfrac{2}{3}\times(\dfrac{-1}{2})$=?

$\dfrac{7}{2}-(\dfrac{-8}{3})\times\dfrac{5}{7}$=?

$\bigg((\dfrac{-7}{6})+\dfrac{7}{6}\bigg)\times\dfrac{8}{9}$=?

$\bigg(\dfrac{6}{7}-\dfrac{3}{4}\bigg):\dfrac{6}{7}$=?

$\bigg(\dfrac{7}{2}-\dfrac{9}{7}\bigg)\times(\dfrac{-5}{7})$=?

$\bigg(\dfrac{8}{3}+(\dfrac{-7}{5})\bigg)\times\dfrac{2}{3}$=?

$(\dfrac{-2}{7})-\dfrac{1}{2}\times(\dfrac{-6}{7})$=?

$\dfrac{8}{7}\times(\dfrac{8}{9}-\dfrac{3}{2})$=?

$(\dfrac{-1}{2})-\dfrac{5}{3}\times\dfrac{3}{2}$=?

$\dfrac{8}{3}\times((\dfrac{-4}{3})-(\dfrac{-4}{7}))$=?