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8 March, 03:33

LN = 6x-5, LM = x + 7, and MN = 3x + 20 find MN

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  1. 8 March, 04:39
    0
    Answer: 68

    Step-by-step explanation:

    LM + MN = LN

    x + 7 + 3x + 20 = 6x - 5

    4x + 27 = 6x - 5

    -4x - 4x

    27 = 2x - 5

    +5 + 5

    32 = 2x

    :2 : 2

    16 = x

    MN: 3x + 20

    3 (16) + 20

    48 + 20

    68
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