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18 September, 20:04

The average of 8 and x = 3. What is x?

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  1. 18 September, 21:03
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    x = - 2

    Step-by-step explanation:

    The average of 8 and x

    (8+x) / 2

    is 3

    (8+x) / 2 = 3

    Multiply each side by 2

    (8+x) / 2 * 2 = 3*2

    8+x = 6

    Subtract 8 from each side

    8+x-8 = 6-8

    x = - 2
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