Concept explainers
Bird count. You want to know how many pigeons you have altogether in your seven pigeonholes. Your smartest pigeon (who’s been studying The Heart of Mathematics) left you a note listing the number of pigeons in each hole as
The note also says that the total number of pigeons is
Write an equation relating the information your smart bird has given you. Then solve for x and determine the number of birds you have.
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Check out a sample textbook solutionChapter 2 Solutions
The Heart of Mathematics: An Invitation to Effective Thinking
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