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16 December, 17:02

A sleeping bag weighs 8 pounds. Your backpack and sleeping bag together weigh 31 pounds. Write an equation to determine whether the backpack without the sleeping bag weighs 25 or 23 pounds.

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  1. 16 December, 17:55
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    Sleeping bag weights 8 pounds

    sb=8

    backpack+sleeping bag=31

    b+sb=31

    sb=8

    b+8=31

    subtract 8 from both sides

    b+8-8=31-8

    b+0=23

    b=23

    backpack weighs 23 pounds with out sleeping bag

    equation is b+s=31

    s=8
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