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.