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x in (-oo:+oo)
(3*x+6)/12 = 10 // - 10
(3*x+6)/12-10 = 0
(3*x+6)/12+(-10*12)/12 = 0
3*x-10*12+6 = 0
3*x-114 = 0
(3*x-114)/12 = 0
(3*x-114)/12 = 0 // * 12
3*x-114 = 0
3*x-114 = 0 // + 114
3*x = 114 // : 3
x = 114/3
x = 38
x = 38
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