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13 July, 09:20

The perimeter of a rectangle is 34 inches. the length is 4 less than twice the width. what is the length of the rectangle. write a system of equations for this problem. which one of the equations below would be part of that system?

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  1. 13 July, 11:29
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    L=length, W=width. Perimeter is

    P=2L+2W=34 also

    L=2W-4

    solve this system of 2 equations by substitution. Put 2nd equation into first:

    2 (2W-4) + 2W=34

    4W-8+2W=34

    6W=42

    W=42/6

    W=7

    Now since L=2W-4

    L=2 (7) - 4

    L=10
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