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11 December, 04:33

Which of the following us the solution to 6 | x-9 | > 12?

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  1. 11 December, 06:43
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    x∈ (11, + ∞)

    x∈ (-∞, 7)

    Step-by-step explanation:

    6|x-9|>12 : Split into possible cases

    6 (x-9) >12, x-9≥0 : solve the inequalities

    x>11, x≥9

    x<7, x<9 : find the intersections

    x∈ (11, + ∞)

    x∈ (-∞, 7)
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