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x in (-oo:+oo)
x/36 = 0.4 // - 0.4
x/36-0.4 = 0
1/36*x-0.4 = 0 // + 0.4
1/36*x = 0.4 // : 1/36
x = 0.4/1/36
x = 14.39999885
x = 14.39999885
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