1. The problem statement, all variables and given/known data https://i.gyazo.com/ec36f9345b56810598a5b2cebc62aeb7.png Determine the current in the 7ohm, 8ohm, and 4ohm resister. 2. Relevant equations The series/parallel equations for equivalent resisters. and V=RI. 3. The attempt at a solution I'm normally pretty good with these circuit questions, but I'm really lost when it comes to using a second battery. When I look at the circuit, it looks like the 9V battery flows into a parallel system with the 12V battery and the resisters. At the same time I see spots where I would imagine the current opposing each other. Basically, I'm wondering how to approach a problem with two batteries.