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this post was submitted on 31 May 2025
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I'm sure we're all geniuses here, but just in case...
Please excuse my dear aunt Sally.
Parenthesis, exponents, multiplication, division, addition, subtraction.
Why? Because a bunch of dead Greeks say so!
3x3-3÷3+3
(3x3)-(3÷3)+3
9-1+3
8+3
11
Multiplication and Division, and Addition and Subtraction are executed at the same level and done in left to right order.
Because it's just a mnemonic to remember what the order of operations is, not like... What the order of operations is, which you should know already if you know the mnemonic.
Because it's the only other thing about that system at all. OP wasn't teaching, just showing what that system does. If you looked for a source that explains it you'd be told