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2^2*y-((6/(8^-1))*z^0*x)-7 = 0
2^2*y-6*8*x-7 = 0
4*y-48*x-7 = 0 // - 4*y-7
-48*x = -(4*y-7) // : -48
x = (-(4*y-7))/(-48)
x = (7-(4*y))/(-48)
x = (7-(4*y))/(-48)
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