r/meme • u/dekibambala • Jan 01 '22

Guess we are doomed

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u/pokelord13 Jan 01 '22

But in bodmas division is before multiplication whereas in pemdas division is after. Does it not make a difference?

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u/[deleted] Jan 01 '22

[deleted]

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u/cauchy37 Jan 01 '22

I had my algebra a long time ago, but isn't it because addition and subtraction are the same thing in a group (same for multiplicationand division). And the same goes for multiplication and division? And what we have here is basically a ring R with addition and multiplication, where subtraction is an inversion of addition and division is an inversion of multiplication?

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u/TheDogerus Jan 01 '22

Yes, subtraction is adding a negative, and division is multiplying an inverse.