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cmhe@lemmy.world ⁨4⁩ ⁨weeks⁩ ago

I don’t get why these kind of post crop up so often.

The answer to them doesn’t matter and these aren’t really math questions, because there is no context given. This is just endless discussions about different people having different assumptions on notation used there…

In real math, where the numbers mean something, good and consistent notation is important, but not necessary, because the order of operations or what those operations are exactly would be clear through the context of these formulas. Good notation just makes it easier to spot errors, work with formulas or to avoid confusion.

Here is what I would assume this formula could mean. Someone has 2 apples and 5 bags of apples that initially came with 8 apples each inside, but someone else ate 5 apples from each of these bags.

With this context it is pretty clear what the answer would be.

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SmartmanApps@programming.dev ⁨2⁩ ⁨weeks⁩ ago

because there is no context given

None needed. Obey the rules of Maths and you get the correct answer.

the order of operations or what those operations are exactly would be clear through the context of these formulas

It’s clear to anyone who knows the rules of Maths.

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- cmhe@lemmy.world ⁨2⁩ ⁨weeks⁩ ago
  Those aren’t ‘rules of maths’, because math would work with other orders of operations as well. They are conventions. Other cultures could have different conventions and it would work as well.
  
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  - SmartmanApps@programming.dev ⁨2⁩ ⁨weeks⁩ ago
    
    Those aren’t ‘rules of maths’,
    
    Yes they are 😂
    
    because math would work with other orders of operations as well.
    
    There aren’t any other orders of operations.
    
    They are conventions
    
    Nope, rules of Maths
    
    Other cultures could have different conventions and it would work as well
    
    They do have other conventions, they do not have other rules. The rules of Maths are universal.
    
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    cmhe@lemmy.world ⁨2⁩ ⁨weeks⁩ ago
    
    In mathematics and computer programming, the order of operations is a collection of conventions about which arithmetic operations to perform first in order to evaluate a given mathematical expression. . These conventions are formalized with a ranking of the operations. The rank of an operation is called its precedence, and an operation with a higher precedence is performed before operations with lower precedence. Calculators generally perform operations with the same precedence from left to right,[1] but some programming languages and calculators adopt different conventions.
    
    en.wikipedia.org/wiki/Order_of_operations
    
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