Is my Req correct? (very simple electronics question)

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The discussion centers on calculating the equivalent resistance (Req) of a circuit, with a specific focus on the accuracy of symbolic calculations. One participant confirms that the calculations are mostly correct but points out an error in the addition of R1 and R2, indicating that 100 Ohms has been mistakenly included. The original poster acknowledges this mistake and expresses gratitude for the correction. They plan to proceed with the assumption that the rest of the calculations are accurate unless further feedback is provided. The conversation highlights the importance of careful verification in electrical circuit analysis.
Femme_physics
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I just need to find the Req of the circuit. Everything is attached. Ignore the fact there's no R4.

Is it correct?
 

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Your symbolic calculations are correct, yes. You have, however, added 100 Ohm too much in R1,2.
 
Ah, thank you for catching my thoughtless error :) unless anyone makes another reply I'm going to assume other than that it's all correct
 
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