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25 February, 23:05

If 2x + 5 = 8x, then 12x = ?

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Answers (2)
  1. 26 February, 00:34
    0
    2x+5=8

    -2x - 2x

    5 = 6x

    divide by 6 on both sides

    .8333=x (it's a repeating decimal)

    12 (.8333) = 9.9996 (depending on how the teacher like it rounded)
  2. 26 February, 00:46
    0
    X = 10

    ~because~

    2x+5=8x, subtract 2x from both sides:

    5=6x, divide 6 on both sides:

    x=5/6, then rewrite the equation:

    12 (5/6)

    x=10
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