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18 August, 17:37

Half the difference of a number and 7 is 11. what is the number?

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  1. 18 August, 18:03
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    1/2 (x - 7) = 11

    Distributive property.

    0.5x - 3.5 = 11

    Add 3.5 to both sides.

    0.5x = 14.5

    Multiply both sides by 2.

    x = 29. (This is your answer.)

    We can plug 29 into the original equation to verify.

    1/2 (x - 7) = 11

    1/2 (29 - 7) = 11

    1/2 (22) = 11

    11 = 11 √ This is correct.
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