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x in (-oo:+oo)
3*x-(6/2) = 4*x-(2/4) // - 4*x-(2/4)
3*x-(4*x)-(6/2)+2/4 = 0
3*x-4*x+2/4-3 = 0
-x-5/2 = 0 // + 5/2
-x = 5/2 // * -1
x = -5/2
x = -5/2
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