Answer:
[tex]\frac{Rx + eR}{2ex}[/tex]
Step-by-step explanation:
You first calculate the product which is [tex]\frac{R}{2e}[/tex] +[tex]\frac{1}{2x} R[/tex] to [tex]\frac{R}{2e} + \frac{R}{2x}[/tex]
Then write all numerators above the least common denominator ([tex]2ex[/tex])
Now you have your answer.