90-12*6+(81-56+11)=

To solve this expression, we need to follow the order of operations, which is also known as PEMDAS (Parentheses, Exponents, Multiplication and Division from left to right, and Addition and Subtraction from left to right).

90 - 12 * 6 + (81 - 56 + 11)

First, we solve the expression inside the parentheses:

90 - 12 * 6 + (81 - 56 + 11) = 90 - 12 * 6 + (25 + 11)

Next, we simplify the addition inside the parentheses:

90 - 12 * 6 + (25 + 11) = 90 - 12 * 6 + 36

Now we perform the multiplication:

90 - 12 * 6 + 36 = 90 - 72 + 36

Finally, we perform the subtraction and addition from left to right:

90 - 72 + 36 = 18 + 36 = 54

So, the final answer is 54.