1. The problem statement, all variables and given/known data Use mesh current to solver for iΔ 2. Relevant equations v1+v2+... vn=0 i=v/R 3. The attempt at a solution 5mA+15.4*i1-5.4i2=0 9.1*i2+5.42*i1-150iΔ=0 Now I have two equations and three unknowns and I'm unsure how I should proceed. Also, how do I tell what polarity the individual currents are, assuming my reference is a clockwise voltage?