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N in (-oo:+oo)
N/(-3.2) = -12.43 // + 12.43
N/(-3.2)+12.43 = 0
12.43-0.3125*N = 0 // - 12.43
-0.3125*N = -12.43 // : -0.3125
N = -12.43/(-0.3125)
N = 39.776
N = 39.776
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