关于x,y的方程组3x+2y=k+2,4x+y=4k-1;的解x,y满足x>y,求k的取值范围.
人气:339 ℃ 时间:2020-03-21 00:41:59
解答
3x+2y=k+2
4x+y=4k-1
两式相减得:
x-y=3k-3
x>y
则:x-y=3k-3>0
k>1
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