6/$\dfrac{4}{9}\times\dfrac{7}{2} +\dfrac{4}{9}\times\dfrac{7}{4}$
$⇔\dfrac{28}{18}+ \dfrac{4}{9}\times\dfrac{7}{4}$
$⇔\dfrac{14}{9} + \dfrac{4}{9}\times\dfrac{7}{4}$
$⇔\dfrac{14}{9} +\dfrac{7}{9}$
$⇔\dfrac{21}{9}=\dfrac{7}{3}$
7/$2+\dfrac{1}{4}\times\dfrac{4}{3}$
$⇔2+\dfrac{1}{3}$
$⇔\dfrac{7}{3}$