Simplification of Three Formulas
I am trying to solve this simple system.  Please take a look and let me know:

    x + y = 8
    y + z = 3
    x + z = ?
Simplification of Three Formulas
===

I am trying to solve this simple system.  Please take a look and let me know:

    x + y = 8
    y + z = 3
    x + z = ?