Question 261118
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I presume you mean:


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ I\ =\ \frac{nE}{nr\,+\,R}]



Multiply both sides by *[tex \Large nr\,+\,R]



*[tex \LARGE \ \ \ \ \ \ \ \ \ \ Inr\ +\ IR\ =\ nE]


Add *[tex \Large -IR\ -\ nE] to both sides:


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ Inr\ -\ nE\ =\ -IR]


Multiply by -1


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ nE\ -\ Inr\ =\ IR]


Factor out an *[tex \Large n]


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ n\left(E\ -\ Ir\right)\ =\ IR]


Multiply by *[tex \Large \frac{1}{E\,-\,Ir}]


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ n\ =\ \frac{IR}{E\,-\,Ir}]


John
*[tex \LARGE e^{i\pi} + 1 = 0]
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