Respuesta :

Answer:

4.

Step-by-step explanation:

[(21 + 6) − 3^2] ÷ 9 ⋅ 2.

First work out the parentheses:

= ( 27 - 3^2) / 9 . 2.

Now the exponential:

= (27 - 9) / 9 . 2

=  18/9 .2

= 2 . 2

= 4.