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n in (-oo:+oo)
(1/6)*(n-12) = (1/4)*(n+8) // - (1/4)*(n+8)
(1/6)*(n-12)-((1/4)*(n+8)) = 0
(1/6)*(n-12)+(-1/4)*(n+8) = 0
1/6*(n-12)-1/4*(n+8) = 0
1/6*(n-12)-1/4*(n+8) = 0
-1/12*n-4 = 0
-1/12*n-4 = 0
-1/12*n-4 = 0 // + 4
-1/12*n = 4 // : -1/12
n = 4/(-1/12)
n = -48
n = -48
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