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Thread: (Help) Finding "x" in an equation: (x-1)3/4 = 64.

  1. #1
    New Member
    Join Date
    Feb 2018

    (Help) Finding "x" in an equation: (x-1)3/4 = 64.

    I'm grade 9 doing very basic algebra, and I came across this question which I just can't figure out.
    It's asking me to find the value of "x" in the equation (x-1)3/4 = 64. They haven't explained how to do this in the book and i'm home schooled so no teacher to ask. That x-1 throws me off.
    Can anyone please explain how you get the answer and what steps you go through to find x? Thank you all. Hope this makes sense.

  2. #2
    Elite Member
    Join Date
    Apr 2005
    What would you do if it were just 'x', rather than 'x-1'? Please demonstrate.

    Also, please clarify. Is that [tex](x-1)^{3/4}\;or\;(x-1)\cdot\dfrac{3}{4}[/tex] or something else?
    "Unique Answers Don't Care How You Find Them." - Many may have said it, but I hear it most from me.

  3. #3
    Elite Member
    Join Date
    Feb 2004
    Ottawa, Ontario
    Can you solve:
    x(3/4) = 60

    Btw, x(3/4) means x multiplied by 3/4.
    Usually shown as: (3/4)x
    I'm just an imagination of your figment !

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