4X-12=KX-K(枝局笑4-K)X=12-K X=(12-K)/4-K(12-K)/猛含腊拍(4-K)>0K>12或K<4
拆开烂颤团得4X-12=kx-kx=(12-k)/(4-k)>洞丛0解此不等式即可得饥橘k<4或k>12
∵4(x-3)=k(x-1)∴x=(12-k)/(4-k)>0∴k>12或k<4