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h in (-oo:+oo)
(h+3)/8 = -4 // + 4
(h+3)/8+4 = 0
(h+3)/8+(4*8)/8 = 0
h+4*8+3 = 0
h+35 = 0
(h+35)/8 = 0
(h+35)/8 = 0 // * 8
h+35 = 0
h+35 = 0 // - 35
h = -35
h = -35
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