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k in (-oo:+oo)
(3/4)*k-(1/2) = -25/44 // + -25/44
(3/4)*k-(1/2)-(-25/44) = 0
(3/4)*k-1/2+25/44 = 0
3/4*k+3/44 = 0 // - 3/44
3/4*k = -3/44 // : 3/4
k = -3/44/3/4
k = -1/11
k = -1/11
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