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X in (-oo:+oo)
X/6 = 8/4 // - 8/4
X/6-(8/4) = 0
X/6-2 = 0
1/6*X-2 = 0 // + 2
1/6*X = 2 // : 1/6
X = 2/1/6
X = 12
X = 12
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