1. The problem statement, all variables and given/known data Simplify the circuit as much as possible to prepare it for node analysis. 2. Relevant equations KCL (sum of all currents through a node equal zero) Ohm's law V=RI 3. The attempt at a solution I'd like to use node analysis. But first I have simplified the circuit and landed at this new circuit: I have no key answer to look at and I feel rather insecure at electronics. Are my simplifications correct? I.e. are those two circuits equivalent? Thanks.