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x in (-oo:+oo)
3*x-((1/2)*(8*x-2)) = 4 // - 4
3*x-((1/2)*(8*x-2))-4 = 0
(-1/2)*(8*x-2)+3*x-4 = 0
3*x-1/2*(8*x-2)-4 = 0
3*x-1/2*(8*x-2)-4 = 0
1-x-4 = 0
-x-3 = 0
-x-3 = 0
-x-3 = 0 // + 3
-x = 3 // * -1
x = -3
x = -3
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