作业帮已知X+Y=3XY,求2X+2Y-XY除以X+Y+2XY的值,要算理.已知X+Y=3XY,求2X+2Y-XY除以X+Y+2XY的值,要算理.
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已知X+Y=3XY,求2X+2Y-XY除以X+Y+2XY的值,要算理.已知X+Y=3XY,求2X+2Y-XY除以X+Y+2XY的值,要算理.
已知X+Y=3XY,求2X+2Y-XY除以X+Y+2XY的值,要算理.
已知X+Y=3XY,求2X+2Y-XY除以X+Y+2XY的值,要算理.
已知X+Y=3XY,求2X+2Y-XY除以X+Y+2XY的值,要算理.已知X+Y=3XY,求2X+2Y-XY除以X+Y+2XY的值,要算理.
由X+Y=3XY可得X+Y-XY=2XY,
用X+Y-XY替换分母中的2XY,
所以(2X+2Y-XY)/(X+Y+2XY)=(2X+2Y-XY)/(2X+2Y-XY)=1
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