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8 February, 17:40

Whats the answer to - 2 (x+7) = 28

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Answers (2)
  1. 8 February, 18:37
    0
    x = - 21

    Step-by-step explanation:

    -2 (x+7) = 28

    simplify the bracket with - 2

    -2 * x + - 2 * 7 = 28

    -2x - 14 = 28

    combine the like terms

    -2x = 28 + 14

    whenever a negative or positive crosses an equal sign, the negative changes to positive or if it is positive, the sign changes from positive to negative.

    -2x = 42

    divide by - 2

    x = 42

    -2

    x = - 21
  2. 8 February, 18:54
    0
    x = - 21

    Step-by-step explanation:

    Start by dividing by - 2. Then you don't have bracket problems.

    -2 (x + 7) = 28

    -2/-2 (x + 7) = 28 / - 2 Do the division

    x + 7 = - 14 Subtract 7 from both sides

    x + 7 - 7 = - 14 - 7 The 7's on the left Cancel. Think money for - 14-7

    x = - 21
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