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30 August, 13:50

The 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. 30 August, 14:09
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    18

    Step-by-step explanation:

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

    x + x + 1 + x + 2 = 57

    x + x + x + 1 + 2 = 57

    3x + 3 = 57

    3x = 57 - 3

    3x = 54

    x = 54/3

    x = 18
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