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

let a,b[tex]\in[/tex]G Assume that a has order 5 and that [tex]a^{3}b=ba^{3}[/tex]

Prove that ab=ba

3. The attempt at a solution

I know there is some magical thing you can multiply by that will make things nice... i just cant figure this out.

if tried left and right multiplying by a^{2}and a^{-2}with no prevail.

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# Homework Help: Really Easy Group Calculations which i cant do

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