The expression 9 + 9 − 9 ÷ 9 must be solved using the correct order of operations.
First, complete the division:
9 ÷ 9 = 1
Now the equation becomes:
9 + 9 − 1
Solve from left to right:
9 + 9 = 18
18 − 1 = 17
The correct answer is 17.
Many people get this wrong because they subtract before dividing.
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