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💡𝚂𝗆𝖺𝗋𝗍𝗆𝖺𝗇 𝙰𝗉𝗉𝗌📱

@ SmartmanApps @programming.dev

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2 yr. ago

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  • multiplication and division are the same operation

    No they're not, but they are both binary operators.

    in order to stop confusing people, it should just be: BOMA.

    Leaving out D and S confuses people about where to do them in the order. It's intended to be used as a checklist

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  • Was anyone else ever taught it as BOMDAS as opposed to BODMAS?

    I don't think so, and I've seen Maths textbooks from all over the world. Only the U.S. wants to reverse the order of DM from everyone else's acronym. 🙄

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  • I’ll never understand these approaches to learning. They require remembering the phrase, and then require remembering how the phrase translates to the rules you need to remember

    Yeah, exactly, but the U.S. seems to have a chip on it's shoulder about always doing everything differently to the whole rest of the world. "Maths? We're not going to use BEDMAS, and we're not going to call them Brackets, and...".

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  • OMG! That's the first time I've actually seen AI get order of operations right! 😂

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  • You don’t necessarily have to do parentheses first

    Yes, you do necessarily have to do it first

    What matters is that the things inside the parentheses are a group that you can’t break apart

    And outside, and you must do them first. You haven't finished Brackets until you have 5(8-5)=15.

    10÷2+3-2*(2+1) you can do the division first

    only because you've separated that part with a plus sign

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  • then multiplications

    There aren't any, only Addition and Brackets (and Subtraction inside Brackets)

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  • I mean, there are very few ambiguous cases

    There are precisely none which are ambiguous

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  • so it would be clearer

    That's because it's already clear as is, as per the rules of Maths.

    I think someone told me that order of operations is like a natural law

    It's a natural consequence of the definitions of the operators. e.g. Multiplication is shorthand for repeated Addition - 2x3=2+2+2 - so if you don't do it before addition you end up with wrong answers. The order of operations rules is in fact just breaking everything down into Addition and Subtraction and then solving from there.

    not a convention

    There are some conventions, like left to right, but in that case that's only because students tend to make mistakes with signs when they don't go from left to right, so it's there to preserve teachers sanity.

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  • We created math

    We discovered it. There are even multiple animals who know how to count

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  • that there was a multiplication there since it isn’t explicit

    There isn't a Multiplication there, only Addition and Brackets, and Subtraction inside Brackets. It's never Multiplication unless there is a Multiplication sign.

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  • Remember that multiplication goes first

    Remember Brackets are solved first - there is no Multiplication

    so it’s: 2+5(8-5) = 2+5*3

    No, so it’s: 2+5(8-5) = 2+(5x8-5x3), a(b+c)=(ab+ac).

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  • It didn’t make sense to me to multiply the 3 & the 5 with zero consideration for the “2”

    That's what the order of operations rules say to do. 2 doesn't come into it until you get down to the Addition step.

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  • just write it better

    It's written like that in Maths textbooks. i.e. there's nothing wrong with it.

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  • Writing it like (8+5)5+2 =17 also makes perfect sense

    Actually that's invalid syntax. Imagine if it was (8-5)-5 and you see why.

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  • posting out of order math problems

    There's no such thing, only people who remember the rules of Maths and people who don't

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  • I literally fixed the equation so that it would be less confusing to people

    No you didn't. You wrote something that is mathematically invalid.

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  • Because this it’s trivial to write it in a way that won’t cause this confusion

    Which is exactly how it is written, for all those who remember the rules of Maths.

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  • it’s mean in that they intentionally wrote it to

    Test who remembers the rules of Maths

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  • The operational order is fucked

    No it isn't.

    the way I rewrote is

    Wrong.

    The only reason you’d write the equation like that is

    Because it's written like that in Maths textbooks

    there’s no reason to write it like that unless you’re

    Obeying the rules of Maths, as found in Maths textbooks

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