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n in (-oo:+oo)
(n+8)/13 = (n+24)/15 // - (n+24)/15
(n+8)/13-((n+24)/15) = 0
(n+8)/13+(-1*(n+24))/15 = 0
(15*(n+8))/(13*15)+(-1*13*(n+24))/(13*15) = 0
15*(n+8)-1*13*(n+24) = 0
2*n-192 = 0
(2*n-192)/(13*15) = 0
(2*n-192)/(13*15) = 0 // * 13*15
2*n-192 = 0
2*n-192 = 0 // + 192
2*n = 192 // : 2
n = 192/2
n = 96
n = 96
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