The circuit looks like this: http://i.imgur.com/QtgiCdR.png
R1= 10 Ω
R2= 8 Ω
R3= 3 Ω
R4= 5 Ω
R5= 2 Ω
V= 15 V
I'm trying the find the current in R1 by using Thevenin's Theorem.
Basic Circuit Analysis Formulas
The Attempt at a Solution
So I calculated the voltages at the points where R1 is removed. 15V on the left side and 90/101V on the right side (confirmed by LTspice). Then I tried to calculate the Thevenin resistance which (once the voltage source is shorted) is the R2 || R3 || (R4 + R5) which turns out to be 168/101Ω. So putting everything together now, Vth = 15 - 90/101 and Rth = 168/101 and Rl = 10, I get that the current in R1 is 1.2096A but according to LTspice, it should be 1.22003A. What am I doing wrong?