This question does not allow people with reputation less than 10 to answer it. Since the question is unanswered, I offered a valid answer in the question body (I edited the question), with a short explanation to a moderator. My edit was removed, question is still unanswered. Is there a way around it?
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First, some background on why questions are protected:
Now, regarding what to do if you come up with a good answer to a protected question. Keep in mind, questions are usually only protected when they've received a lot of non-answers already, so nobody's intentionally trying to prevent you from answering if you have useful information.
Hopefully that clears some things up for you. I'm sure you'll be on your way up in rep points soon, and this little check will no longer bother you.
It's bad luck, in a way. You would be able to answer had it not been put in Protected mode. Solution - get 10 points answering other, non-Protected Questions! David is right - you can get those points easily! Easy way is to edit questions for 2 points each.
That said, I do agree that newbie user's should be able to suggest answers, just as they can currently suggest edits. Why not? Using something embedded within the edit-functionality(i.e., maybe edit forks into two options if you're under 10 points). It will prevent bots, at least. But overall - thankfully, Protected questions are a minority.
The way to answer a protected question is to post another (good) question or answer, and have it get an upvote or two to give you the necessary reputation. 10 reputation is just one upvote on an answer, or two on a question - so at a minimum, you just have to write something that one other person thinks is good.
The 10-rep requirement is intentionally a very small obstacle. It's only intended to keep people from answering until they have participated enough to get a sense of how the Stack Exchange system works - for instance, knowing that answers should never be edited into the question body ;-) (which you now know). Basically, you just need to demonstrate that you can be trusted to use the system properly.