Posting an answer after posting it in comment that solved the OP's problem
61817
Comment first, then answer, what's the etiquette?
16030
What to do when OP answers his/her own question in an edit?
19115
Mark a comment as the answer to a question
28528
Where should I post my sum-up of the answers, as the OP?
147438
How can I help correct an answer if I don't have enough reputation to comment?
34508
Notify us when the question has been edited after posting an answer
148972
Approving/rejecting edits made by the OP to an accepted answer
11892
Reset question grace period once an answer has been posted
14500
Thanking users who answered my question
5563
Asking users to accept answer when they comment that it answers their question
92983
Posting a Solution of a problem that You faced to Help Newbies
147521
Deleting my own bad answer or comment
90462
Marking comment as an answer?
116563
Where to post a "canonical answer" when it's not in response to a specific question?
120140
What to do with an additional answer which IMHO explains only a small portion of the question, while another answer explains more
51469
Allow converting comments to answers
76054
Add a message when posting to old questions with more than N answers