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K in (-oo:+oo)
-8 = (K-6)/8 // - (K-6)/8
-((K-6)/8)-8 = 0
(-1*(K-6))/8-8 = 0
(-1*(K-6))/8+(-8*8)/8 = 0
-1*(K-6)-8*8 = 0
-K-58 = 0
(-K-58)/8 = 0
(-K-58)/8 = 0 // * 8
-K-58 = 0
-K-58 = 0 // + 58
-K = 58 // * -1
K = -58
K = -58
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