What makes non-PEMDAS answers invalid?
It seems to me that even the non-PEMDAS answer to an equation is logical since it fits together either way. If someone could show a non-PEMDAS answer being mathematically invalid then I’d appreciate it.
My teachers never really explained why, they just told us “This is how you do it” and never elaborated.
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I think the main point that everyone else is trying to get at but maybe not quite communicating clearly is that; there is only 1 correct answer to any of these given problems, one way to “do” math if you will.
PEMDAS does not describe the way in which math answers are calculated, it describes the way in which math is written out so that other humans can understand what they are reading.
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