若/X+Y-9/+(2X-Y+3)=0求X与Y的值
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若/X+Y-9/+(2X-Y+3)=0求X与Y的值若/X+Y-9/+(2X-Y+3)=0求X与Y的值若/X+Y-9/+(2X-Y+3)=0求X与Y的值前边是绝对值么?是的话,有x+y=9,2x-y=-
若/X+Y-9/+(2X-Y+3)=0求X与Y的值
若/X+Y-9/+(2X-Y+3)=0求X与Y的值
若/X+Y-9/+(2X-Y+3)=0求X与Y的值
前边是绝对值么?是的话,有x+y=9,2x-y=-3,x=2,y=7
若/X+Y-9/+(2X-Y+3)=0求X与Y的值
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