There is a post about homework which deals with similar issue. My concern is pedagogy. There are some people posting on here who are asking for answers to what I consider to be "rite of passage" questions [maybe that should be a tag].
What I mean by this is that the value in working it out for yourself is immeasurable in relation to plugging the numbers into someone else's answer. There was one about $sin3x$ recently, and two points on a line.
What I would like is some guidance on when answering the question is less helpful to the questioner than giving a hint. And whether there ought to be a [hints welcome] tag which might disable the kudos for answering? [No idea whether this would be possible] - and maybe upgrade the reward for hinting?