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.

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