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k in (-oo:+oo)
-3*k-4 = 2*k-44 // - 2*k-44
44-3*k-(2*k)-4 = 0
44-3*k-2*k-4 = 0
40-5*k = 0 // - 40
-5*k = -40 // : -5
k = -40/(-5)
k = 8
k = 8
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