What is 6÷2(1+2) = ? This problem went viral and generated millions of comments on Facebook, Twitter, YouTube and social media sites. I explain how to get the correct answer by using the modern interpretation of the order of operations. I also explain how you would get a different answer under historical usage of the division symbol. (Note: some people write 6/2(1 + 2) = but this has the same answer.)
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Slate explains the history of the division symbol
Here is a 1917 article from “The American Mathematical Monthly” that explains the usage of the division symbol as an exception to the order of operations
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