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P in (-oo:+oo)
P/12.4 = 3/2 // - 3/2
P/12.4-(3/2) = 0
P/12.4-3/2 = 0
0.08064516*P-3/2 = 0 // + 3/2
0.08064516*P = 3/2 // : 0.08064516
P = 3/2/0.08064516
P = 18.6000003
P = 18.6000003
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