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M in (-oo:+oo)
M/30.1 = -5.2 // + 5.2
M/30.1+5.2 = 0
0.03322259*M+5.2 = 0 // - 5.2
0.03322259*M = -5.2 // : 0.03322259
M = -5.2/0.03322259
M = -156.52000642
M = -156.52000642
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