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**Hello!**

1. Homework Statement

1. Homework Statement

http://i0.simplest-image-hosting.net/picture/uklad.jpg [Broken]

**2. Homework Equations**

[itex]\frac{1}{R} = \frac{1}{R1} + \frac{1}{R2}[/itex]

[itex]R = R1 + R2[/itex]

3. The Attempt at a Solution

3. The Attempt at a Solution

I have been trying to re-draw the schematics, but with no avail. So far I have figured out that, looking at the right side, resistors labeled 20, 40, 40 Ohms seem to be connected in parallel, so I could replace them with one resistor (10 Ohms). Then that resistor would be also in parallel with 30 Ohms, that was just a bit on the left. Is any of this correct?

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