已知|2m-6|+(3m-n-5)²=0,且(3n-2m)x
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![已知|2m-6|+(3m-n-5)²=0,且(3n-2m)x](/uploads/image/z/387746-26-6.jpg?t=%E5%B7%B2%E7%9F%A5%7C2m-6%7C%2B%283m-n-5%29%26%23178%3B%3D0%2C%E4%B8%94%283n-2m%29x)
已知|2m-6|+(3m-n-5)²=0,且(3n-2m)x
已知|2m-6|+(3m-n-5)²=0,且(3n-2m)x
已知|2m-6|+(3m-n-5)²=0,且(3n-2m)x
2m-6=0,m=3
把m=3代入
9-n-5=0,n=4
把m=3和n=4代入
6x
2m-6=0
3m-n-5=0
∴m=3
n=4
(3n-2m)x<15
∴6x<15
x<5/2
当x<=-5/2时 原式=-(2x+5)-(5-2x)+3=-7
当-5/2