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22 January, 17:52

Log (-2x+9) = log (7-4x)

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  1. 22 January, 21:51
    0
    x = - 1

    Step-by-step explanation:

    log (-2x+9) = log (7-4x)

    becomes:

    -2x + 9 = 7 - 4x as long as these are not negative

    2x + 9 = 7

    2x = - 2

    x = - 1

    check

    -2 * (-1) + 9 = 2 + 9 = 11

    ok
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