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X in (-oo:+oo)
(X+2)/3 = 4 // - 4
(X+2)/3-4 = 0
(X+2)/3+(-4*3)/3 = 0
X-4*3+2 = 0
X-10 = 0
(X-10)/3 = 0
(X-10)/3 = 0 // * 3
X-10 = 0
X-10 = 0 // + 10
X = 10
X = 10
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