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2 March, 06:09

The flat screen television has the length of 2x and the width of 3x+2. What is x if the perimeter is 74 inches?

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  1. 2 March, 06:45
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    length : 2x

    width : 3x+2

    Perimeter = 2 (l+w)

    substitute in knowns

    74 = 2 (2x+3x+2)

    combine like terms

    74 = 2 (5x+2)

    distribute

    74 = 10x+4

    subtract 4 from each side

    70 = 10x

    divide by 10

    x=7

    Answer x=10
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