Comment on I dunno

• 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 ⁨1⁩ ⁨day⁩ 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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      • moriquende@lemmy.world ⁨1⁩ ⁨day⁩ ago

        Here is math for kids www.mathsisfun.com/…/distributive-law.html

        Distributive law means you are allowed to distribute, not that you must distribute. I’m so sorry for the amount of effort you’re futilely putting into this lmao. Nowhere in all your sources and screenshots is it stated you must distribute, and thus the entire argument breaks down.

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