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x in (-oo:+oo)
2*(3/2-x)-8 = x-(2*(x+2)) // - x-(2*(x+2))
2*(3/2-x)+2*(x+2)-x-8 = 0
2*(3/2-x)+2*(x+2)-x-8 = 0
7-x-8 = 0
-x-1 = 0
-x-1 = 0
-x-1 = 0 // + 1
-x = 1 // * -1
x = -1
x = -1
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