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21 July, 15:14

The sum of twice a number and 17 is - 1

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  1. 21 July, 15:36
    0
    Let call the number we are searching for x. 2*x + 17 = - 1 so 2*x = - 1-17 = - 18 and x = - 18/2 = - 9
  2. 21 July, 15:39
    0
    let the number x

    2x + 17=-1

    collect like term

    2x=-1 - 17

    2x = - 18

    divide through by 2

    2x/2 = -18/2

    x=-9
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