- #1

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## Homework Statement

G and H are isomorphic.

Prove that if x

^{-1}=x for all x in G, then x

^{-1}=x for all x in H.

## Homework Equations

G is isomorphic to H means there is an operation preserving bijection from G to H.

## The Attempt at a Solution

I need a point in the right direction.