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6 August, 18:14

Which of the following is a solution for the equation 7x + 21 = 105? 105 84 15 12

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  1. 6 August, 19:37
    0
    7x + 21 = 105 ... subtract 21 from both sides

    7x = 105 - 21

    7x = 84 ... divide both sides by 7

    x = 84/7

    x = 12
  2. 6 August, 20:07
    0
    12 would be the answer
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