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There are twice as many students in the cooking club as in the drama club. Suppose there are  students in the drama club and  students who are members of both clubs. Find an expression for the total number of students who are in the cooking club or the drama club (or both). Give your answer in simplest form.

 Oct 11, 2022
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By Inclusion-Exclusion, the answer is 2a - 4b.

 Oct 11, 2022

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