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x in (-oo:+oo)
(1-3)*(x+3)-((1/6)*(x-12)) = x-2 // - x-2
(1-3)*(x+3)-((1/6)*(x-12))-x+2 = 0
(-1/6)*(x-12)+(1-3)*(x+3)-x+2 = 0
2-1/6*(x-12)-2*(x+3)-x = 0
2-1/6*(x-12)-2*(x+3)-x = 0
2-13/6*x-x-4 = 0
2-19/6*x-4 = 0
-19/6*x-2 = 0
-19/6*x-2 = 0
-19/6*x-2 = 0 // + 2
-19/6*x = 2 // : -19/6
x = 2/(-19/6)
x = -12/19
x = -12/19
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