Respuesta :

You can use the following formula:

a/b ÷ c/d = (a*d)/(b*c)

So:

[tex]\frac{-16}{21}\div\frac{8}{3}=\frac{-16\cdot3}{21\cdot8}=\frac{-48}{168}=-\frac{2}{7}\approx0.2857[/tex]