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24 November, 21:57

The lengths of a rectangle are 2x and x - 3. A triangle has lengths x, x - 2 and x + 4. The rectangle and triangle have the same perimeter.

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  1. 24 November, 23:38
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    Let P = the combined perimeter for the rectangle and square.

    P = rectangle + triangle

    P = 2 (2x) + 2 (x - 3) + x + x - 2 + x + 4

    P = 4x + 2x - 6 + 3x - 2 + 4

    P = 9x - 8 + 4

    P = 9x - 4
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