How to use mathcad to symbolically extract variables-2

[ChadG.]

This is the same program as suggested in Mathcad v14. What have I done wrong that the processor says No solution found

[AlanStevens · Accepted solution]

1. You have a missing bracket in one equation.

2. The symbolic solution is big and, I suggest, of little use, but see attached for a way of getting at it.

Alan