I had made one Edit Suggestion to this Question, but it was rejected.
I was wondering whether I was mistaken and the Edit is wrong. Hence, I then made the same Edit Suggestion via Comment and OP incorporated the Edit !
It seems my Edit Suggestion was indeed valid. But why then was it rejected ?
UPDATE :
It is not wording or formatting issue which is mostly Opinion or subjective.
It was a factually "incorrect" Part in the Post, which was "corrected" by my Edit.
Where it was "CP is the set of coprime integers", I suggested "CP is the set of PAIRS of coprime integers", because there is no concept of "set of coprime integers".