y-x-2xy=0 求(3x+xy-3y)/(y-xy-x) 初一下数学《课时训练》7.2(二)分式,最后一题,怎么写(要有过程)y-x-2xy=0 求(3x+xy-3y)/(y-xy-x)
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y-x-2xy=0 求(3x+xy-3y)/(y-xy-x) 初一下数学《课时训练》7.2(二)分式,最后一题,怎么写(要有过程)y-x-2xy=0 求(3x+xy-3y)/(y-xy-x)
y-x-2xy=0 求(3x+xy-3y)/(y-xy-x) 初一下数学《课时训练》7.2(二)分式,最后一题,怎么写(要有过程)
y-x-2xy=0 求(3x+xy-3y)/(y-xy-x)
y-x-2xy=0 求(3x+xy-3y)/(y-xy-x) 初一下数学《课时训练》7.2(二)分式,最后一题,怎么写(要有过程)y-x-2xy=0 求(3x+xy-3y)/(y-xy-x)
已知Y-X-2XY=0,即Y-X=2XY,那么(3X+XY-3Y)=3(X-Y)+XY=3(-2XY)+XY=-5XY.那么分数下面的Y-XY-X=2XY-XY=XY,上面除以下面答案为-5.