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Math Help - need help ASAP. my exams 2morow

  1. #1
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    Unhappy need help ASAP. my exams 2morow

    (a) solve simultaneous equations

    27^y=9^3x+2 and 2log3 x=2log3 y+2
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  2. #2
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    Quote Originally Posted by outlaw View Post
    (a) solve simultaneous equations

    27^y=9^3x+2 and 2log3 x=2log3 y+2
    x = y+2

    y = x - 2

    27^(x-2) = 9^(3x+2)

    (3^3)^(x-2) = (3^2)^(3x+2)

    3^(3x-6) = 3^(6x+4)

    6x + 4 = 3x - 6

    3x = -10

    x = -10/3

    y = -16/3

    Assuming that you were too lazy to use brackets and that's what you meant :P
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