solving system of equations in solvebock

[MG_10870768]

Hi 

I have 2 equations that are written symbolically. and there are 2 variables : "D" & "z"  

I cannot solve the equations even in solveblock . please help me . my file is attached

Thankyou

[vnamboodheri]

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[Werner_E]

A quite old, unanswered question which seems to have been moved just now from the PTC-Education-Forum to the Mathcad section here.

In case @MG_10870768  is still interested, here is a possible solution using the solve block:

The system seems to be very sensible with respect to the guess values. Using z:=1 it fails to find a solution, using z:=2 a different solution with a negative z-value is found.
Trying to solve the system symbolically threw an "unknown error".

Prime 9 file attached