You could indeed obtain information about A using the item clicked. However efficient problem solving includes working left-to-right. The left diagram is the appropriate one to use at this point for no greater reason than it is the first item which provides information about A. The serious problem solve will develop the solution using the left diagram first. After that solution is complete redo the solution using the right diagram first. Exploring a problem by investigating the alternative solution paths can lead to further understanding of the problem and the solution process.

Click on the item in the problem statement
that provides the response to the
request made by this equation

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A SureMath solution. Copyright 1998, Howard C. McAllister.