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2 October, 13:30

The width of ben's rectangular family room is 3ft less than the length. The perimeter is 70 ft. Which equation can be used to find the length L of the room? A.) 70=L-3 B.) 70=2L-3 C.) 70=2 (l-3) or D.) 70=2 (2L-3) ?

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  1. 2 October, 14:29
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    This can be solved by establishing a system of equation, since

    W = L - 3

    And the perimeter is

    2w + 2L = 70

    Substituting the w in the second equation

    2 (L-3) + 2L = 70

    4L = 70 + 6

    4L = 76

    L = 19 ft

    W = 16 ft
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