Pass the root of a resolved equation to a new variable

[BillHugh]

After solving an equation and I have found a root of 8.83 for unknown D. Now how can I pass the value of 8.83 to a new variable WW automatically without typing WW:=8.83. See below for part of my worksheet.
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After resolving this equation, I know D=8.83, but how can I carry on using this found value D of 8.83 since if I type D:=, then I have no return, this is to say variable WW is not defined.

Please can you help?

Thank you very much in advance.
Bill

 

[MintJulep]

Perhaps you should identify the application that you're using.

 

[IRstuff]

Providing a Mathcad file directly would help, assuming that's what it is.

You should be able to assign your solution directly to D for use in the last equation

Student homework should be posted only in the student forum

TTFN (ta ta for now)
I can do absolutely anything. I'm an expert!

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[BillHugh]

Thanks for all the responses received. I found a way to carry on using the resolved root of the equations.