hirmuolio t1_jadcp9h wrote
Reply to comment by Jtrain360 in ELI5 How did we figure out the order for PEMDAS? Like how do we know that that order is correct? by ToodlyGoodness
We can write math without any "order of operations". It is just inner functions (or rather relations) all the way down.
It gets really ugly looking really fast. So you never do it unless you have to prove something involving order of operations.
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