I’m not sure how I would go about proving this. Any help would be appreciated.
2026-03-25 04:25:15.1774412715
Discrete Math - If two natural numbers divide each other, then they are equal
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let $a,b$ two natural numbers, if $$a|b$$ then $b=ma$ and $m$ is a natural number, and if $$b|a$$ then $$a=nb$$ thus we get $$b=mnb$$ and can be written as $$b-mnb=0$$ and from here we get $$b(1-mn)=0$$ Can you finish?