(Q*,o) where x o y = xy/7
G1 closure hold
G2 Idenitiy - I have found the identity to be 7
I just need to prove G3 inversers and am not sure how to do this.
Can anyone help?
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We have ( is the unit), so . Thus, .
Originally Posted by emakarov . Thus, . What?
The OP has already established that the unit is 7.
No. The OP said that e=7 in his original post.
(Ahem!) Missed that. Thanks.
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