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5 February, 18:25

The difference of twice a number n and 9 is 17.

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  1. 5 February, 18:35
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    2n - 9 = 17

    n = 13

    Step-by-step explanation:

    2n - 9 = 17

    Add 9 to each side

    2n-9+9 = 17+9

    2n = 26

    Divide each side by 2

    2n/2 = 26/2

    n = 13
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