Traffic signs are regulated by the Manual on Uniform Traffic Control Devices​ (MUTCD). The perimeter of a rectangular traffic sign is 106 inches.​ Also, its length is 11 inches longer than its width. Find the dimensions of this sign.

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  1. L = W + 11

    2L + 2W = 106

    Substitute W+11 for L in the second equation and solve for W. Insert that value into the first equation to solve for L. Check by putting both values into the second equation.

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