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23 September, 15:50

9 = - X + 8

Solve the equation

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Answers (1)
  1. 23 September, 15:59
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    9 = - X + 8

    move + 8 to the other side

    sign changes from + 8 to - 8

    9-8 = - x+8-8

    9-8 = - x

    1 = - x

    mutiply both sides by - 1 to get + x

    (1) (-1) = (-x) (-1)

    Answer: x=-1
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