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x in (-oo:+oo)
(10*x)/12 = 12-4 // - 12-4
(10*x)/12-12+4 = 0
5/6*x-8 = 0 // + 8
5/6*x = 8 // : 5/6
x = 8/5/6
x = 48/5
x = 48/5
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