I disagree that you can get multiple correct answers. There are rules that all arithmetic follows. Lacking parentheses, operations follow a default, order of operations. Follow the rules and will get THE correct answer, regardless of what google, or any other " authority" says.
One of the problems with "stretch" education is that it removes the discipline requuired to get correct answers.

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1982 300SD " Wotan" ..On the road as of Jan 8, 2007 with Historic Tags