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12 August, 21:01

The following table shows the length and width of two rectangles:

Length Width

Rectangle A 2x + 4 x - 1

Rectangle B 3x + 1 2x - 3

Which expression is the result of the perimeter of rectangle B minus the perimeter of rectangle A?

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  1. 12 August, 21:03
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    P=2 (l+w)

    [2 (3x+1) + 2 (2x-3) ]-[2 (2x+4) + 2 (x-1) ]

    [ (6x+2) + (4x-6) ]-[ (4x+8) + (2x-2) ]

    [10x-4]-[6x+6]

    4x-10
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