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12 February, 12:57

Doubles minus one to solve 8+7

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Answers (2)
  1. 12 February, 13:14
    0
    2 times x (the unknown number to solve for) minus 1 equals 8+7

    2x-1=8+7 8+7=15

    2x+1=15 Now we have to get x by itself

    In order to do that you add 1 from both sides

    2x=16 Then you divide 2 from both sides

    x=16/2

    x=8
  2. 12 February, 13:21
    0
    I think its probley 16 i dont really understand this question but im sure it is
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