math

you a framing a picture that is 5 in by 7in. with a 1 inch wide frame. find the perimeter of the outside edge of the frame. explain, pleaswe i know the anser is 32 but why?

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  1. 5 + 2 = 7
    7 + 2 = 9

    P = 2L + 2W
    P = 2(7) + 2(9)
    P = 14 + 18

  2. gracias!

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  3. but where does the 2 in five plus 2 come from?

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  4. The frame is on all sides.

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