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24 November, 01:51

He sum of three numbers in order is 57. The equation that represents this is x + (x + 1) + (x + 2) = 57. Which value of x from the set {16, 17, 18, 19} makes the equation true?

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  1. 24 November, 02:08
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    x = 18

    The value "18" from the data set makes the equation true.

    x + (x + 1) + (x + 2) = 57

    18 + (18 + 1) + (18 + 2) = 57

    18 + 19 + 20 = 57

    57 = 57
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