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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
2-1/2*x = 0 // - 2
-1/2*x = -2 // : -1/2
x = -2/(-1/2)
x = 4
x = 4
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