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k in (-oo:+oo)
126 = k/25.2 // - k/25.2
126-(k/25.2) = 0
126-0.03968254*k = 0
126-0.03968254*k = 0 // - 126
-0.03968254*k = -126 // : -0.03968254
k = -126/(-0.03968254)
k = 3175.1999746
k = 3175.1999746
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