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x in (-oo:+oo)
t = 27-((1/4)*(w-k)) // - 27-((1/4)*(w-k))
(1/4)*(w-k)+t-27 = 0
1/4*(w-k)+t-27 = 0
1/4*(w-k)+t-27 = 0
t-1/4*k+1/4*w-27 = 0
t-1/4*k+1/4*w-27 = 0
x belongs to the empty set
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