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k in (-oo:+oo)
k/2+7.3 = 29.3 // - 29.3
k/2-29.3+7.3 = 0
1/2*k-22 = 0 // + 22
1/2*k = 22 // : 1/2
k = 22/1/2
k = 44
k = 44
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