Follow PEMDAS. So, first the ( ) needs to be done first. So that now gives us
3^2 + 5 x 4 - 6/3. Next is exponents. So now we have 9 + 5 x 4 -6/3. Next we have to do multiplication. So now we have 9 + 20 - 6/3. Now we have to add. 29-6/3. 29-2 is 27. So, 27 is the answer.