the length of a rectangular picture frame is 3 centimeters less than twice the width. the perimeter is 78 centimeters. find the length and w

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the length of a rectangular picture frame is 3 centimeters less than twice the width. the perimeter is 78 centimeters. find the length and width of the picture frame

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    2021-10-13T21:36:37+00:00

    Let the width be x
    width = x
    length = 2x – 3

    Perimeter = x + 2x – 3 + x + 2x – 3 = 6x – 6 

    6x – 6 = 78
    6x = 78 + 6
    6x = 84
    x = 14 cm

    2x – 3 = 2(14) – 3 = 25cm

    The width is 14cm and the length is 25cm 

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