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What is 48÷2(9+3)?

I was having a heated debate with my colleague and we can't agree on the answer to this question: Does 6÷2(2+1) equal 9 or does it equal 1?

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    These tags have nothing to do with the question. Furthermore, this has already been addressed on many fora, including this one, many times. The answer is that there is ambiguity in the order of operations with the division sign. Therefore, there is no correct answer as there is no generally accepted order of operations for this notation.2012-09-18
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    The textbook answer is that operations of equal precedence are performed from left to right in the absence of parentheses, so the result is $9$. The real answer is that the expression equals *the writer is incompetent*: in the real world it’s ambiguous, and the ambiguity is sufficiently obvious that failure to avoid it is inexcusable sloppiness.2012-09-18

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