The expression 20 − 5 × 2 + 1 must be solved using the correct order of operations.
Complete the multiplication first:
5 × 2 = 10
The expression now becomes:
20 − 10 + 1
Calculate subtraction and addition from left to right:
20 − 10 = 10
10 + 1 = 11
The correct answer is 11.
Many people get a different result because they subtract before completing the multiplication.
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