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16 December, 17:18

1. 3x + 7 = 13 (x = - 2; x = 2; x = 5)

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Answers (2)
  1. 16 December, 17:40
    0
    3x + 7 = 1 3

    3x = 13 - 7

    3x = 6

    x = 6/3

    x = 2
  2. 16 December, 17:41
    0
    Answer: x=2

    Step-by-step explanation:

    I am assuming you are asking which x fits the equation. To see if x works for the equation, you would plug it in.

    x=-2

    3 (-2) + 7=13

    -6+7=13

    1≠13

    x=2

    3 (2) + 7=13

    6+7=13

    13=13

    x=5

    3 (5) + 7=13

    15+7=13

    22≠13
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