To simplify the expression \(3 \cdot 7 - 6 \cdot 2\), we need to follow the order of operations, also known as PEMDAS (Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right)). First, we perform the multiplications and then the subtraction.
Step 1: Calculate the Multiplications
First, we calculate the two multiplication components of the expression:
\[
3 \cdot 7 = 21
\]
\[
6 \cdot 2 = 12
\]
Step 2: Perform the Subtraction
Next, we subtract the result of the second multiplication from the result of the first:
\[
21 - 12 = 9
\]
Final Answer
The final result of the expression \(3 \cdot 7 - 6 \cdot 2\) is \(\boxed{9}\).