11 - [27-2 (9-5) x (5-2) ] x 2 + 4 (answer is 9, I just don't know how to get to the answer)

11 - [27 - 2 (9 - 5) x (5 - 2) ] x 2 + 4

= 11 - [27 - 2x (4) x (3) ] x 2 + 4

= 11 - (27 - 24) x 2 + 4

= 11 - 3 x 2 + 4

= 11 - 6 + 4

= 5 + 4

= 9

Follow the order of operations. So things within brackets should be done first. If the inside of the bracket has addition, subtraction, division and multiplication, do the multiplication and division first because multiplication and division is higher than addition and subtraction