Symbolics function will not work on Mathcad Prime 3.1

[jwallace]

When trying to solve a variable equation, Mathcad Prime 3.1 will not allow me to symbolically solve a specific variable. The attached example shows that it will not solve for x in a simple equation such as "ax+b=0". If anyone has any idea why this is the case, your input would be greatly appreciated.

Thanks

[Werner_E]

Looks like your equations don't contain a variable x. All I see is a variable xc. If you mean x*c you will have to type it that way.

[VladimirN]

You forgot about the multiplication sign between "x" and "c":