Concept explainers
A teacher instructed her class as follows:
Take any number, multiply it by 4, add 16, and divide the result by 2. Subtract 7 from the quotient and tell me your answer. I will tell you the original number.
Explain how the teacher was able to tell each student’s original number.
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Check out a sample textbook solutionChapter 8 Solutions
A Problem Solving Approach to Mathematics for Elementary School Teachers, Books a la Carte Edition plus NEW MyLab Math with Pearson eText - Access Card Package (12th Edition)
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