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Prove that m divides n if 5m + n divides 5n + m.

 Jan 5, 2018
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m=5

 

n=-13

 

5m+n=12, 5n+m=5(n+1)=5*(-12)=-60

 

12 divides -60, but 5 doesn't divide -13

 Feb 8, 2018

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