(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Let a,b be integers where a doesn't =0. Prove that if a divides b, and b divides a, then a=b or a=-b

3. The attempt at a solution

I started out with b=aj and a=bk, where j,k are integers. Don't quite know how to proceed

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# Proof on the divisibility of integers

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