algebra 1

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the perimeter of a rectangle is 68cm. the length is 2cm less than 3 times the width. find the length and width.

  • algebra 1 -

    P = 68 cm.

    Width = x-cm.
    Length = (3x - 2).

    P = 2x + 2(3x-2) = 68 cm,
    2x + 6x - 4 = 68,
    8x = 72,
    X = 9cm.

    3x - 2 = 3*9 - 2 = 25cdm.

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