Error solving polynomial equation using Solve[ ]?

Questions
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1

I have got two complex equations after some derivation with log and polynomial. But Solve and NSolve function cannot able to solve them stating “Solve was unable to solve the system with inexact coefficients or the system obtained by direct rationalization of inexact numbers present in the system. Since many of the methods used by Solve require exact input, providing Solve with an exact version of the system may help.” Can anyone make any suggestions how can I solve that?
Attached the mathematica file.

Open in Wolfram Cloud ↗

Test.nb (20.5 KB)

2

Use Rationalize to convert Real to exact Rational. e.g.

Rationalize[uAl, 0]
3

Thank you for your reply. But uAl= 0, I don’t see how rationalize would solve the problem.

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4

What do you mean by “equations”? Your uAl,uC are two expressions, not equations, and they contain three variables. What do you want to do with them?