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X in (-oo:+oo)
X/0.2 = 0.7 // - 0.7
X/0.2-0.7 = 0
5*X-0.7 = 0 // + 0.7
5*X = 0.7 // : 5
X = 0.7/5
X = 0.14
X = 0.14
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