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X in (-oo:+oo)
0.47 = X/1000 // - X/1000
0.47-(X/1000) = 0
0.47-1/1000*X = 0 // - 0.47
-1/1000*X = -0.47 // : -1/1000
X = -0.47/(-1/1000)
X = 470
X = 470
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