This question already has an answer here:
Typically, this would involve duplicate questions. I searched SO-Meta to see if this question was already answered, and I found a few, but they all related to answering questions duplicated on the same SE site.
In this case, I'm talking about duplicate or near duplicate questions found on different SE sites. And to be clear, I'm not talking about cases where the same user might cross post the same question on multiple SE sites. I mean 2 questions by different users and not obviously copy-pasted from one to the other, but still essentially duplicates.
I don't have any specific examples at hand, but I've seen questions on Stack Overflow or Super User or Server Fault or Programmers.SE, and seen a duplicate or near duplicate on one of the other sites. I'm talking duplicate to the extent that sometimes they could both be answered with the same answer.
So my question is, if I can answer the question, is it OK to post the same or nearly same answer to the questions on both sites, or should I make significant efforts to hide the fact that the answers are the same?