Question
Liam had 4 times as many books as Oliver. After Liam and Oliver donated 138 books and 18 books away respectively, they were left with an equal number of books. How many books did Liam have at first?
4 m

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Liam had 4 times as many books as Oliver. After Liam and Oliver donated 138 books and 18 books away respectively, they were left with an equal number of books. How many books did Liam have at first?