[comp.lang.lisp] Algebraic manipulator sought

gevins@ptolemy.arc.nasa.gov (Jody Gevins) (11/03/90)

I'm looking for a simple algebraic manipulator which will run
on a Symbolics.  It should be able to take something like:

(x = 14y + z), and 'z

and return: z = x - 14y   (i.e.  solving the equation for z).

Not much more complicated than that.  Does anyone know of such
a package that wouldn't cost (too much) money?  Macsyma is an
overkill of such a pkg, and is VERY expensive.

Thanks,
Jody