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n in (-oo:+oo)
(19/4)*n+1 = (3/2)*n+125/8 // - (3/2)*n+125/8
(19/4)*n-((3/2)*n)-(125/8)+1 = 0
(19/4)*n+(-3/2)*n-125/8+1 = 0
13/4*n-117/8 = 0 // + 117/8
13/4*n = 117/8 // : 13/4
n = 117/8/13/4
n = 9/2
n = 9/2
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