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27 July, 16:17

A 21 foot beam is to be cut into three pieces so that the second and the third piece are each 3 times the length of the first piece if x represents the length of the shorter piece, find the lengths of all three pieces

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  1. 27 July, 17:06
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    x+3x+3x=21

    7x=21

    x=3

    3, 9, 9=21

    the answers are 3, 9, and 9
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