1. The problem statement, all variables and given/known data A circuit problem and I think a picture could do a much better job than anything I could type. Picture should be attached below if I didn't screw it up. 2. Relevant equations I'm allowed to use Ohm's Law, resistor series/parallel combinations, superposition, Thevenin's theorem, KCL/KVL, voltage and current division. 3. The attempt at a solution The only thing that really jumps out at me here is Thevenin's theorem. Unfortunately that's probably the concept I'm the least comfortable with so I'm a little unsure here. My thought process so far was to open up the resistor R and calculate the Thevenin voltage and resistance. I tried out the voltage first since it's usually the hardest and started off by combining the two resistors to the right because from my understanding (not 100% sure here) they're in parallel. I'm unsure of how to treat the two remaining resistors though because of the mysterious current source in the middle between them. Since it's pushing current upwards, would it be okay to consider the two resistors in series?