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x in (-oo:+oo)
0.1-(x/0.12) = 0.1 // - 0.1
0.1-(x/0.12)-0.1 = 0
0.1-8.33333333*x-0.1 = 0
-8.33333333*x = 0 // : -8.33333333
x = 0
x = 0
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