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16 December, 20:24

12 (2k + 11) = 12 (2k + 12)

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  1. 16 December, 21:23
    0
    12 (2k + 11) = 12 (2k + 12)

    (12) (2k) (12) (11) = (12) (2k) (12) (12)

    24k+132=24k+144

    Move 24k to the left side. Sign changes from + 24k to - 24k.

    24k-24k+132=24-24k+144

    132=144

    Answer: no solution
  2. 16 December, 23:14
    0
    12 (2k+11) = 12 (2k + 12)

    12 x 2k + 12 x 11 = 12 x 2k + 12 x 12

    24k + 132 = 24k + 144

    +24k = - 24k

    K + 132 = 144

    -132 = - 132

    K=8
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