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X in (-oo:+oo)
X/16 = 7/12 // - 7/12
X/16-(7/12) = 0
X/16-7/12 = 0
1/16*X-7/12 = 0 // + 7/12
1/16*X = 7/12 // : 1/16
X = 7/12/1/16
X = 28/3
X = 28/3
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