Question
David had 4 times as many books as Glen. After David and Glen donated 84 books and 18 books away respectively, they were left with an equal number of books. How many books did David have at first?
4 m

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David had 4 times as many books as Glen. After David and Glen donated 84 books and 18 books away respectively, they were left with an equal number of books. How many books did David have at first?