Question
Use the order of operations to find the value of the expression.
2+3×16−2×21−3
2+3×16−2×21−3
Answers
GPT-4o mini
To evaluate the expression \( 2 + 3 \times 16 - 2 \times 21 - 3 \), we will follow the order of operations, which is often abbreviated as PEMDAS (Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right)).
1. **Multiplication First**:
- Calculate \( 3 \times 16 = 48 \).
- Calculate \( 2 \times 21 = 42 \).
Now, substitute these values back into the expression:
\[
2 + 48 - 42 - 3
\]
2. **Now, perform Addition and Subtraction from left to right**:
- Start with \( 2 + 48 = 50 \).
- Then \( 50 - 42 = 8 \).
- Finally, \( 8 - 3 = 5 \).
Therefore, the value of the expression \( 2 + 3 \times 16 - 2 \times 21 - 3 \) is \( \boxed{5} \).
1. **Multiplication First**:
- Calculate \( 3 \times 16 = 48 \).
- Calculate \( 2 \times 21 = 42 \).
Now, substitute these values back into the expression:
\[
2 + 48 - 42 - 3
\]
2. **Now, perform Addition and Subtraction from left to right**:
- Start with \( 2 + 48 = 50 \).
- Then \( 50 - 42 = 8 \).
- Finally, \( 8 - 3 = 5 \).
Therefore, the value of the expression \( 2 + 3 \times 16 - 2 \times 21 - 3 \) is \( \boxed{5} \).