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x in (-oo:+oo)
X/2+3/2 = (2*x)/2-(1/2) // - (2*x)/2-(1/2)
X/2-((2*x)/2)+3/2+1/2 = 0
X/2-x+3/2+1/2 = 0
1/2*X-x+2 = 0 // - 1/2*X+2
-x = -(1/2*X+2) // * -1
x = 1/2*X+2
x = 1/2*X+2
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