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64^3*x-1 = (1/8)^8*x-5 // - (1/8)^8*x-5
64^3*x-((1/8)^8*x)-1+5 = 0
4398046511103/16777216*x+4 = 0 // - 4
4398046511103/16777216*x = -4 // : 4398046511103/16777216
x = -4/4398046511103/16777216
x = -67108864/4398046511103
x = -67108864/4398046511103
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