HP Prime: Isolate a variable in an equation

[Davidro]

(12-20-2013 10:58 PM)CR Haeger Wrote:  I'm not an expert but I tend to use the solve() command in CAS mode. For example

Solve(x+y=4,y) should return 4-x.

Good luck.

Thanks friends:
That's what I need. But, using this command with different variables X and Y, appears a recommendation that doesn't work either. Another observation is that the result is not symbolic when the variables are different from X and Y.
Grateful
David