4ES + 2E + 4S 
The result is,
((4E+4)/(4S+2)) = 2 
But how do you get there? 
Thank you
There is no way you can start with a NON-EQUATION
4ES + 2E + 4S   ---(There is no equal sign in this at all, it is
                        an EXPRESSION, not an EQUATION)---
and end up with an EQUATION
((4E+4)/(4S+2)) = 2  ---(Has an equal sign)
Sorry.  You've posted something wrong or left out some
essential part.
Edwin
AnlytcPhil@aol.com