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The perimeter of an equilateral triangle is 7 inches more than the perimeter of a square,and the side of the triangle is 5 inches longer than the side of square.Find the side of the triangle.

  • pre-algebra -

    Let triangle side length be T and square side length be S.

    3T = 4S + 7
    T = S + 5

    4T = 4S + 20

    Subtract the first equation from the last to get T

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