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