How to Equate Two Solutions in Mathematica for Variable J?

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SUMMARY

This discussion focuses on solving two equations in Mathematica to find a variable J by equating the results for A. The user successfully utilizes the Solve function to derive A from both equations, resulting in two expressions: {{A -> blah1}} and {{A -> blah2}}. To find J, the user aims to equate these two results and solve for J automatically. The solution is simplified by using the command Solve[{Eqn1, Eqn2}, A], which allows for simultaneous resolution of A consistent with both equations.

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BustedBreaks
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hi, I have two equations that I have used the Solve function in Mathematica to solve for A in both equations

What I am having trouble with is trying to equate the results and solving for another variable J automatically

Basically this is what I want to do:

Solve[Eqn1, A]

It gives {{A -> blah1}}

Solve[Eqn2, A]

It gives {{A -> blah2}}

Then

Solve[blah1=blah2, J]
It gives J -> blah3

automatically.THANKS!
 
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It will simultaneously solve for A consistent with both equations if you just input: Solve[{Eq1, Eq2},A].
 

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