I'm having some trouble figuring out this proof: Let H be a subgroup of G and suppose that Ha=bH for a,b in G. Show aH=Hb. Any suggestions?
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Originally Posted by sfspitfire23 I'm having some trouble figuring out this proof: Let H be a subgroup of G and suppose that Ha=bH for a,b in G. Show aH=Hb. Any suggestions? If e is the identity of G then . Therefore for some . So and similarly
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