Algebra

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A triangular pennant has two sides the same length. The third side is 9 in. shorter than either of the equal sides. The perimeter of the pennant is 57 in. How long is the shortest side?

  • Algebra -

    Let x = a longer side

    2x + x - 9 = 57

    3x = 57 + 9

    3x = 66

    x = 22

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