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k in (-oo:+oo)
15.2 = k/126 // - k/126
15.2-(k/126) = 0
15.2-1/126*k = 0 // - 15.2
-1/126*k = -15.2 // : -1/126
k = -15.2/(-1/126)
k = 1915.19950205
k = 1915.19950205
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