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13 December, 10:53

Simplify - 9 - (12 - 3x)

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Answers (2)
  1. 13 December, 11:02
    0
    First, distribute the - 1

    -9-12+3x

    Then subtract the - 9 and - 12

    -21 + 3x

    Add 21 to both sides*

    21 = 3x

    Divide

    x = 7

    *I would assume that 0 = - 9 - (12-3x) as it is not mentioned in the description
  2. 13 December, 11:33
    0
    Start by distributing the negative sign:/

    -9-12+3x

    Simplify:

    -21+3x
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