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## Homework Equations

V=IR

Sum of I at a node = 0

Sum of V about a closed loop = 0

## The Attempt at a Solution

I've been playing with both KVL and KCL equations trying get a working answer, but none of my attempts seem to be anything but cyclically finding me zero. My problem is how I consider the input current. Is it right to make the assumption that I essentially have a battery there which has the value of ε = i*R_equivalent. The circuits cannot be broken down in terms of parallel or series from what I've seen.