Hello. This is a strange problem that I ran into in my homework. I did not use one of the resistors in the second loop. I don't think this is correct and I am really confused. I have no idea how else I could set this up to solve for the needed variables. Find Vs and Is, if V2 = 20V, R1 = 6K, R2 = 10K, and R3 = 2K. http://img115.imageshack.us/img115/5062/ca202nrs4.gif [Broken] Here is what I did: http://img169.imageshack.us/img169/7892/newrf2.jpg [Broken] If it is wrong; how should I set this up correctly?