It's a difficult balance tbh. You have to struggle to learn so teachers can't just work through the homework problems for you. So they want to give you hints to get you unstuck but not give the answer away. What would be better is to work through a non-homework problem. If this is happening to you, try to find a similar problem in the textbook and work through that one together. They'll still want you to struggle but be more relaxed with giving you hints because they aren't just handing over the solution.