1. The problem statement, all variables and given/known data http://l.bitcasa.com/-QwLBhUK [Broken] Here is the problem statement 2. Relevant equations Vth = V1*R2/(R1+R2) Rth = R1*R2/(R1+R2) Vth - Rth*Id - Vz = 0 3. The attempt at a solution http://l.bitcasa.com/4ycq3BMN [Broken] Here is my attempt at a solution. I am having trouble finding the Thevenin Voltage for a circuit with a Zener Diode with two voltage sources. This attempt at a solution proved to be no help, because as you may have seen in the picture you downloaded, it kept on telling me it was wrong. Once I find the Thevenin voltage, I will be able to find the current through the Zener Diode with the formula Vth - Rth*Id - Vz = 0. May somebody please help me?