Question
Valen had 3 times as many books as Mark. After Valen and Mark donated 53 books and 7 books away respectively, they were left with an equal number of books. How many books did Valen have at first?
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Valen had 3 times as many books as Mark. After Valen and Mark donated 53 books and 7 books away respectively, they were left with an equal number of books. How many books did Valen have at first?