Respuesta :

Answer:

8/27.

Step-by-step explanation:

(16/81)^3/4

= 16^3/4 / 81^3/4

Now

16^3/4 = (16^1/4)^3

= (⁴√16)^3

= 2^3

= 8.

and

81^3/4 = (81^1/4)^3

= (⁴√81)^3

= 3^3

= 27

So the answer is 8/27