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When you subtract 2 from a number, double the difference, and then add 7, you get 57. What is the number?

  • math -

    n = the number
    n - 2 = subtract 2 from the number
    2(n - 2) = double the difference
    2(n - 2) + 7 = then add 7

    2(n - 2) + 7 = 57
    2n - 4 + 7 = 57
    2n + 3 = 57
    2n = 54
    n = 27

    The number is 27

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