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Cake day: June 28th, 2023

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  • atomicorange@lemmy.worldtoMemes@lemmy.ml6÷2(1+2)
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    7 months ago

    I’m a scientist and I’ve only ever encountered strong juxtaposition in quick scribbles where everyone knows the equation already. Normally we’re very careful to use fraction notation (or parentheses) when there’s any possibility of ambiguity. I read the equation and was shocked that anyone would get an answer other than 9.


  • atomicorange@lemmy.worldtoMemes@lemmy.ml6÷2(1+2)
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    7 months ago

    I originally had the same reasoning but came to the opposite conclusion. Multiplication and division have the same precedence, so I read the operations from left to right unless noted otherwise with parentheses. Thus:

    6/2=3

    3(1+2)=9

    For me to read the whole of 2(1+2) as the denominator in a fraction I would expect it to be isolated in parentheses: 6/(2(1+2)).

    Reading the blog post, I understand the ambiguity now, but i’m still fascinated that we had the same criticism (no parentheses implies intent) but had opposite conclusions.