1. The problem statement, all variables and given/known data "Determine the currents in the various branches" 2. Relevant equations The one I am stuck on is 6. 3. The attempt at a solution I know there is 3 equations, I believe one of them is I1 + I2= 3 and a second is 4= 2I3+I2 ?? but I am not sure if that is correct or what the 3rd one is. I know I can solve the equations if I know the 3 equations.