1. The problem statement, all variables and given/known data Hello guys! I am getting really desperate here and I'd be very glad for any help. I have the following circuit with 5 resistors :(excuse the drawings, I am in a hurry, I hope they are sufficient) http://s11.postimg.org/8mmd2pa2b/original.png And I am supposed to solve for IR3 and UR3. 2. Relevant equations 3. The attempt at a solution So my guess was to first transform it into a linear circuit so I put R1 R2 and R4 and R5 together: R12 = R1*R2/R1 + R2 R45 = R4*R5/R4 + R5 So the circuit would be now simplified like this and I could apply the theorem: http://s7.postimg.org/57r3m1b1n/step2.png And now I removed R3, and solved for Rt = R12*R45/R12 + R45 Then I figured out the current Ix*R12 + Ix*R45 = U Ix = U/R12 + R45 And then the Ut = U - IxR12 When I put it all together like this to figure out IR3: IR3 = Ut/Rt + R3 I am not getting the right value so I must be doing something wrong. I solved the circuit using the Star Delta transformation and I got all the right values. I am not posting any numbers because I wanna solve this myself, I just need someone to point me in the right direction. I am a beginner and I would be extremely glad for any help I can get. Thank you and have a great day!