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X in (-oo:+oo)
X/12 = 24/36 // - 24/36
X/12-(24/36) = 0
X/12-2/3 = 0
1/12*X-2/3 = 0 // + 2/3
1/12*X = 2/3 // : 1/12
X = 2/3/1/12
X = 8
X = 8
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