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z in (-oo:+oo)
(3/2)*(z-(4*z)-(1/2)) = 1/8-((5/4)*(z-(z/2))) // - 1/8-((5/4)*(z-(z/2)))
(3/2)*(z-(4*z)-(1/2))+(5/4)*(z-(z/2))-(1/8) = 0
(3/2)*(z-4*z-1/2)+(5/4)*(z-(z/2))-1/8 = 0
3/2*(-3*z-1/2)+1/2*5/4*z-1/8 = 0
(3/2*8*(-3*z-1/2))/8+(1/2*5/4*8*z)/8-1/8 = 0
3/2*8*(-3*z-1/2)+1/2*5/4*8*z-1 = 0
-31*z-6-1 = 0
-31*z-7 = 0
(-31*z-7)/8 = 0
(-31*z-7)/8 = 0 // * 8
-31*z-7 = 0
-31*z-7 = 0 // + 7
-31*z = 7 // : -31
z = 7/(-31)
z = -7/31
z = -7/31
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