1. The problem statement, all variables and given/known data Find the Thevenin equivalent circuit with respect to terminals a, b by finding open-circuit voltage and the short-circuit current. 2. Relevant equations i1+i2+i3..=0 v1+v2+v3..=0 i=v/R 3. The attempt at a solution I was trying to shove this on my own for practice, but when I looked at the solution I don't understand something. When they're calculating Vth, why did they completely ignore v1 and one side of the equation? Also, when they calculate... (v2-9)/8 + v2/10, why is it v2/70 in the first equation, and v2/10 in the second? I know one is open and one is short circuited, but why is the 60 being ignored?