this post was submitted on 18 Dec 2025
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It's not arithmetic at all, it's just about convention aka how to communicate math. The author didn't make themselves clear enough so people misunderstand what calculation they mean.
The order of operations is part of arithmetic. Although, the memes about it are certainly not good mathematics communication.
There's a useful distinction to be made. The order of operations is different between conventional written maths, calculators, reverse polish notation, python, etc. In contrast there is no disagreement over what the result of any individual binary operations is
The notation might be different, but the rules are universal
The rules are about how you interpret the notation, so that makes no sense.
No, the notation definitions are about how to interpret the notation. The rules are about how to do the Maths.
So if you have one "notation definition" as you call it which says that 2+2*3 means ”first add two to two, then multiply by three" and another which says "first multiply two by three, then add it to two", why on earth do the "rules" have anything further to say about order of operations?
No we don't. We have another notation which says to do paired operations (equivalent to being in brackets) first.
Because if you don't obey them you get wrong answers 🙄
They're rules actually.
Yes they did, someone screwed up the answers, just like in this book...
There's only 1 possible answer to it.
Sorry but there is no math government that can enforce rules, and the order of operations isn't intrinsic either. It is just something people agreed upon volununtarily, aka a convention
Maths textbooks do. Try looking in some
Yes they are! 😂
Nope. Literally proven rules
My dude sit in a university lecture for math majors.
Your school books arent gospel
Just so you know, there is no point trying to convince this guy of anything. I explained why here
Yikes
You know I have a Masters in Maths, right? 🤣
Proofs are, and these things are very easy to prove 🙄
You have a masters but you can't differentiate between notation and the concept it is trying to convey
By which you mean you mean you don't have a Masters and can't differentiate between notation and rules 🙄
You know I have a Masters in Maths, right? 🤣
Proofs are, and these things are very easy to prove 🙄