Question: solution regurns a RealRange -how to grab lower or upper bound in range returned?

I have a system of equations that returns a RealRange :

xLp_tmp := RealRange(85.32914119, infinity)

it actually looks like this:

anyway, I want to "pick" the lowerbound of that range and assign it to a variable but I can't figure  out how to do it.  

I've tried:



but neither worked.  I don't know what else to try.

Thank you in advance for the help.

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