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I need to use the Gaussian Elimination to solve a system of equations, but I have no idea on how to do that. I remember doing these in high school, but since its been a while I can't remember exactly how to do it. Here's the system of equations I need to solve using it:

-4x + 2y - 4Z = -8
7x - 6y - 4z = -8
3x - 5y + 3z = 6

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