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Proof on the divisibility of integers 
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#1
Feb1610, 12:33 PM

P: 17

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 


#2
Feb1610, 12:57 PM

Mentor
P: 21,321

Substitute the expression for a or b into the other equation. What do you get?



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