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n in (-oo:+oo)
(1/2)*(8*n+3) = 23 // - 23
(1/2)*(8*n+3)-23 = 0
1/2*(8*n+3)-23 = 0
1/2*(8*n+3)-23 = 0
4*n-43/2 = 0
4*n-43/2 = 0
4*n-43/2 = 0 // + 43/2
4*n = 43/2 // : 4
n = 43/2/4
n = 43/8
n = 43/8
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