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H in (-oo:+oo)
-1/2 = (-6/8)*H // - (-6/8)*H
-((-6/8)*H)-1/2 = 0
(3/4)*H-1/2 = 0
3/4*H-1/2 = 0 // + 1/2
3/4*H = 1/2 // : 3/4
H = 1/2/3/4
H = 2/3
H = 2/3
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