The rule was broken by the opener, why say answerer breaks a rule ?
Many peer moderators put explanations for their closure votes as comments to the question. Answerers use that information already, before they start. I would say, just close the topic, when needed. Don't bother answerers with responsablities of openers.
Some question rules are incompatible ...
L.Dutch's answer is the correct answer, and I upvoted it
But I'm happy to give you some very specific advice.
Ignoring the Title of the question, if the question is three (3) sentences long or less, there's an 85% chance it's a bad question. If the post is only one (1) sentence long, it's a bad question — period. In fact, I question any post that's just one ...
Let's start from our help center which clearly state
Answer well-asked questions
This should provide already some guidance on when a question is worth being answered, and you should be using your own judgment.
Moreover, at the time you posted your answer there were already two comments pointing out that that question had issues, in particular:
it was ...
We really like lots of questions! Stack Exchange only allows you to ask one question per post. All you have to do is ask a well focused question and we can answer it. You may ask as many questions as you need to ask in order to address the problem. This makes the process easier for all of us.
Nós realmente gostamos de muitas perguntas! O ...
The limit of one question per post is a design decision that is at the core of the Stack Overflow model.
When you have multiple questions in one post it makes it harder to identify and highlight the good answers. What if answer A does a fantastic job with question 1 and doesn't even attempt to answer question 2? Do you allow it because it is excellent at Q1 ...
I think you have already been told to give a good read at our help center.
If you go there you will find a section called "What questions should I avoid asking?" which precisely answer your question here:
You should only ask practical, answerable questions based on actual problems that you face. Chatty, open-ended questions diminish the usefulness ...