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15 March, 21:38

Eliza's backpack weighs 18 and 7/9 pounds with her math book in it. Without her math book, her backpack weighs 14 and 7/8 pounds. How much does Eliza's math book weigh?

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  1. 15 March, 21:53
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    18 7/9 - 14 7/8

    = 169/9 - 119/8

    now you must find a common denominator

    = 281/72

    3 65/72 lbs
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