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x in (-oo:+oo)
x/19.7 = 0.6091370558338 // - 0.6091370558338
x/19.7-0.6091370558338 = 0
0.05076142*x-0.6091370558338 = 0 // + 0.6091370558338
0.05076142*x = 0.6091370558338 // : 0.05076142
x = 0.6091370558338/0.05076142
x = 12.00000031
x = 12.00000031
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