Let me give what I consider a pretty borderline example of the dilemma. I'm not sure whether to proceed with an Answer or to engage the OP with a Comment-based hint.
The Question Graph with more than 6 vertex of odd degree was initially posed as an attempt to prove something false, purportedly taken from this text on introductory graph theory (not sure of the edition):
I am trying to learn Graph Theory by myself using Douglas West's book.
I pointed out a counterexample and asked the OP to recheck the problem statement, which they did (editing the body and title of the Question to make it sound). By my "de minimus" standard for engagement the OP has met the burden for providing context to let me know where they are having difficulty.
I further replied with a hint Comment:
The revised problem seems fairly straightforward. How many vertices with odd degree does a path have? What happens if a graph consists of three paths combined as far as counting the vertices of odd degree?
The first query is really a softball pitch (easy to hit), and the second is more or less decisive for solving the problem. But the OP has not so far responded, very possibly because they have not been back on the site.
While I believe the user could and should apply themselves to working out this exercise, I'm inclined to provide an Answer that gives a "bookkeeping technique" for such problems (how to account for the vertex degrees when composing subgraphs) based on an incidence matrix. Such a technique is the sort of explanation I'd hope would have value for future Readers whether the OP re-engages or not.
The OP did not re-engage after my Comment-based hint, but instead self-deleted the Question a little more than a week later. In the meantime I'd invited him or her to post a self-answer if they'd solved the problem on their own. I don't feel so attached to the (textbook) exercise as a teaching opportunity that I will push for undeleting (nor re-post the Question on my own initiative).