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28 November, 12:11

The length of a rectangle is three centimeters more than twice the width. The perimeter is 78 centimeters. Define a variable and write and solve an equation to find out how long and wide the rectangle is?

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  1. 28 November, 13:56
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    Width = x

    therefore length = 2x+3

    perimeter = 78

    therefore 2 (2x+3) + 2x = 78

    4x+6+2x = 78

    6x+6 = 78

    6x = 72

    x = 12

    therefore the width = 12 and the length = 27
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