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x in (-oo:+oo)
5*x-(2*(x-(1/2))) = 4*x-4 // - 4*x-4
5*x-(2*(x-(1/2)))-(4*x)+4 = 0
5*x-2*(x-1/2)-4*x+4 = 0
5*x-2*(x-1/2)-4*x+4 = 0
3*x-4*x+1+4 = 0
1-x+4 = 0
5-x = 0
5-x = 0
5-x = 0 // - 5
-x = -5 // * -1
x = 5
x = 5
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