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k in (-oo:+oo)
(3*k)/4-(2*k)-28-3 = 37 // - 37
(3*k)/4-(2*k)-37-28-3 = 0
(3*k)/4-2*k-37-28-3 = 0
-5/4*k-68 = 0 // + 68
-5/4*k = 68 // : -5/4
k = 68/(-5/4)
k = -272/5
k = -272/5
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