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4 March, 12:28

Demetrious returned five library books last week, returned three books this week, then checked out 8 more books. He now has 12 library books. How many books did hehave before last week?

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  1. 4 March, 15:52
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    Answer:The number of books that he had before last week is 28

    Step-by-step explanation:

    Let x represent the number of books that he had before last week.

    Demetrious returned five library books last week. This means that the number of books left is x - 5

    He returned three books this week. This means that the amount of books left is x - 5 - 3 = x - 8

    He then checked out 8 more books. This means that the amount of books left is x-8-8 = x - 16

    He now has 12 library books. This means that

    x - 16 = 12

    x = 12 + 16 = 28
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