1. The problem statement, all variables and given/known data 2. Relevant equations KVL and KCL 3. The attempt at a solution Let V = V1 and the Voltage across the 2 ohm resistor be V2 just for reference. Step 1: KCL @ Supernode: V1/3 + V2/2 + 21/4 + V3/6 = 0 I think my problem is here somewhere. Does V3 = V2 because they're in parallel? Also, am I wrong to say that 21/4 is a current going out of the supernode? Step 2: V2-V1 = 9 (pretty sure this is right) I can't get the correct answer. Any help is appreciated.