

This solution illustrates the basic structure of problem solving.
The algebraic operations
are done error free using
SureMath  the math software for 21st century problem
solving.
The starting equation RESPONDS directly to what is
ASKED FOR and
REQUESTS additional information.
The next step RESPONDS to the request.
Supplying the RESPONSE to the requesting equation
produces a RESULT.
The REQUESTRESPONSERESULT structure will solve any problem.
In order to solve complex problems reliably, the basic REQUESTRESPONSERESULT structure must be used routinely. Practice on problems like this one is necessary. The best problems to practice on are ones that you can do "in your head". Converting to an orderly conceptbased solution develops the skills needed for solving more involved problems reliably.