The problem could be started with the second sentence. When there is more than one way to start a problem it is more efficient to start with the first response encountered which does the job. The first sentence in this case. It is suggested that you write out the solution starting with the second sentence. In this way you will become more familiar with the problem solving process. This leads to being able solve problems comfortably.
Click on the sentence in the problem
that responds to the current request.
Comments are important and appreciated.
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A SureMath
solution. Copyright 1998, Howard C. McAllister.