Comment on I dunno

• moriquende@lemmy.world ⁨2⁩ ⁨days⁩ ago

  Yes, the math textbook says exactly what I said, that it’s a multiplication. There’s no mention of it being a separate operation taking precedence. The parentheses in your example are added for clarity.

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  • SmartmanApps@programming.dev ⁨2⁩ ⁨days⁩ ago

    Yes, the math textbook says exactly what I said, that it’s a multiplication

    Nope, they say it’s Brackets…

    5(36)=(5x36) <== Brackets

    bc=(3x4) <== Brackets

    There’s no mention of it being a separate operation taking precedence

    It’s part of the Brackets step. I have no idea what “separate operation” you’re talking about

    The parentheses in your example are added for clarity

    Nope. They are there because The Distributive Law requires them. “those who study algebra are required to make their calculations conform to these laws”.

    Whether you give priority to juxtapositions is a

    A literal Law of Maths. See textbook.

    the consensus being to just use parenthesis around when writing in a single line to avoid confusion.

    No it isn’t. You won’t find any Maths textbook that says that.

    However, there is no distribution step taking precedence

    There is the Brackets step, including Distribution, taking precedence, as per Maths textbooks 🙄

    as you mentioned

    As the textbooks mention

    the whole debate centers around whether the writer was too lazy to add parenthesis

    The only debate is by people like you ignoring what is taught in Maths textbooks.

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    • moriquende@lemmy.world ⁨2⁩ ⁨days⁩ ago

      Nowhere in your “proof” screenshots does it say anything about distribution being part of the brackets step. Distribution is a method that can help solve equations, but it isn’t required. If you have 2(3+5) you’re free to solve it as 2*3+2*5 or as 2*8, whichever is easiest. That is because juxtaposition means multiplication and nothing else.

      Math textbooks almost universally will either use clear brackets or simply write divisions in 2 lines, which avoids the confusion altogether.

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      • SmartmanApps@programming.dev ⁨1⁩ ⁨day⁩ ago

        Nowhere in your “proof” screenshots does it say anything about distribution being part of the brackets step

        Which step is first? Brackets. What do they do first in 5(36)/9? The Brackets.

        What does the other textbook do with bc? Puts it in Brackets. Which step is fist in order of operations? Brackets 🙄 What do they end that page with? “those who study algebra are required to make their calculations conform to these laws”. You seriously need to work on your comprehension that I need to explicitly spell out to you what the textbooks say

        Distribution is a method that can help solve equations

        The Property is. The Law is a rule which literally must be obeyed, as per Maths textbooks 🙄

        it isn’t required

        Yes it is! That’s why it’s a Law 😂

        If you have 2(3+5) you’re free to solve it as 23+25 or as 2*8

        Nope, neither

        1/2(3+5)=1/(6+10)

        1/2x3+2x5=3/2+10 WRONG ANSWER

        1/2x8=8/2=4 WRONG ANSWER

        Welcome to why it must be in brackets, as per Maths textbooks 🙄

        That is because juxtaposition means multiplication and nothing else

        says person who can’t cite any Maths textbook that says that. Nope! It means it’s a Term/Product, the result of a Multiplication (or Factorisation), and nothing else…

        Image

        Note that it never used the word Multiplication at all in that definition 🙄

        Math textbooks almost universally will either use clear brackets or simply write divisions in 2 lines

        or an obelus or slash on one line

        Image

        which avoids the confusion altogether

        Only people who don’t remember the rules of Maths are confused about it. Students have no trouble with it.

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