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[" 7.The simulatencous cquations "Kx+2y-...

[" 7.The simulatencous cquations "Kx+2y-z=1" ,"],[[(K-1)y-2z=2" and "(K+2)x=3" have only "],[" one solution when "],[[1.K=-2,2X=-1],[3K-0,4K-1]]]

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