Let's simplify the expression step-by-step using the order of operations, which is Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right).
The original expression is:
\[ (8 - 5) \cdot 3 - 11 \]
- First, evaluate the expression inside the parentheses:
\[ (8 - 5) = 3 \]
Now substitute this value back into the expression:
\[ 3 \cdot 3 - 11 \]
- Next, perform the multiplication:
\[ 3 \cdot 3 = 9 \]
Now substitute this value back into the expression:
\[ 9 - 11 \]
- Finally, perform the subtraction:
\[ 9 - 11 = -2 \]
Thus, the simplified expression is:
\[ \boxed{-2} \]