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N in (-oo:+oo)
N/1.9 = -0.2 // + 0.2
N/1.9+0.2 = 0
0.52631579*N+0.2 = 0 // - 0.2
0.52631579*N = -0.2 // : 0.52631579
N = -0.2/0.52631579
N = -0.38
N = -0.38
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