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16 May, 13:35

Toni can carry up to 18 lb in her backpack. Her lunch weights 1 lb. Her gym clothes weight 2 lb. And her books (

b. weight 3 lb each. How many books can she carry in her backpack?

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  1. 16 May, 13:58
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    3lb + 3x=18

    3-3+3x=18-3

    3x=15

    3x/3=15/3

    x=5

    she can carry 5 books
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