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**1. Homework Statement**

i found this circuit somewhere here in this forum

https://www.physicsforums.com/attachment.php?attachmentid=10935&d=1190194219

it asks to find vo

**2. Homework Equations**

**3. The Attempt at a Solution**

i found that vo is 6V using kirchhof's law, the current source i transformed it to voltage soure, and after some calculations i found that it's 6V

am i right?

but I cant find the 6 v using the superposition principle, can anyone help me out?

when i transformed to voltage source i said that 10ohm and 8 ohm resistors are in series? so the resistor of both is 18 ohm

then this 18 ohm resistor is in parallel with 6 ohm i found the new resistor and said that the current would be

I = 15/3 = 5 A

the voltage will be 5*(18||6+3)

then having the first source and making the same step i find another voltage then i add them up and I don't get 6 V to be the Vo