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x in (-oo:+oo)
x/35 = 0.4 // - 0.4
x/35-0.4 = 0
1/35*x-0.4 = 0 // + 0.4
1/35*x = 0.4 // : 1/35
x = 0.4/1/35
x = 13.9999993
x = 13.9999993
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