algebra

A piece of ribbon 3 1/4 ft long is cut from a 8-foot roll of ribbon. how much ribbon remains on the roll?

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  1. 7 + 4/4 - (3 + 1/4)

    = 7 - 3 + 4/4-1/4

    = 4 + 3/4

    = 4 3/4
    ===============
    check
    3 1/4 + 4 3/4 = 7 4/4 = 8 whew!

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