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The problem asks us to calculate the value of the expression $8 - 3 \times 7$.

ArithmeticOrder of OperationsArithmetic Operations
2025/4/22

1. Problem Description

The problem asks us to calculate the value of the expression 8−3×78 - 3 \times 7.

2. Solution Steps

To solve this expression, we need to follow the order of operations (PEMDAS/BODMAS). Multiplication comes before subtraction.
First, we perform the multiplication:
3×7=213 \times 7 = 21
Next, we perform the subtraction:
8−21=−138 - 21 = -13

3. Final Answer

The final answer is -13.

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