The expression provided is:

$(2 - 1) + 9 \times 6$

To solve it, we follow the order of operations (PEMDAS: Parentheses, Exponents, Multiplication and Division (left to right), Addition and Subtraction (left to right)).

1. Parentheses: Solve $2 - 1$. $2 - 1 = 1$

   The expression becomes: $1 + 9 \times 6$

2. Multiplication: Perform $9 \times 6$. $9 \times 6 = 54$

   The expression now becomes: $1 + 54$

3. Addition: Add $1 + 54$. $1 + 54 = 55$

Thus, the simplified answer is:

$\boxed{55}$

Would you like further details or have any questions? Here are some related questions to consider:

1. What is the significance of the order of operations in mathematics?
2. How would the expression change if we used division instead of multiplication?
3. Can you express $9 \times 6$ using repeated addition, and how does that relate to multiplication?
4. What happens if we change the parentheses in this expression? How does it affect the result?
5. Why is it important to simplify expressions before calculating?

Tip: Always remember to handle operations inside parentheses first when simplifying expressions.