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(8/125)^2*x-1 = (25/4)^2*x // - (25/4)^2*x
(8/125)^2*x-((25/4)^2*x)-1 = 0
-9764601/250000*x-1 = 0 // + 1
-9764601/250000*x = 1 // : -9764601/250000
x = 1/(-9764601/250000)
x = -250000/9764601
x = -250000/9764601
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