Question

Simplify the expression using the order of operations.
(4+5)2–3
= 2–3
= –3
=

Answer 1

Let's simplify the expression step by step using the order of operations (also known as PEMDAS/BODMAS: Parentheses/Brackets, Exponents/Orders, Multiplication and Division (from left to right), Addition and Subtraction (from left to right)).

1. Start with the original expression:
\[
(4 + 5) \cdot 2 - 3
\]

2. Solve the parentheses first:
\[
4 + 5 = 9
\]

3. Substitute that back into the expression:
\[
9 \cdot 2 - 3
\]

4. Now, perform the multiplication:
\[
9 \cdot 2 = 18
\]

5. Substitute that back into the expression:
\[
18 - 3
\]

6. Finally, perform the subtraction:
\[
18 - 3 = 15
\]

Thus, the simplified expression is:
\[
\boxed{15}
\]