2x+3y/5x-3y=3/5求x/y的值

已知x-y/x+y=3,求代数式5(x-y)/x+y-x+y/2(x-y) 已知:3x-5y=0,求x/y,x-y/y,x-y/x (x-y)/(x+y)=3求( 3x-2y-1)/(x+y-5) 若x-y/x+y=5,求x-y/2x+2y+5x+5y/3x-3y的值 若x+y分之x-y=3,求式子x+y分之5(x-y)—2(x-y)分之x+y的值 若x-y分之x+y=3,求式子x+y分之5(x-y)—2（x-y）分之x+y的值 {(x+y)/2+(x-y)/3=1,(x+y)-5(x-y)=2.求x=?,y=? 已知x-y=3,求[（x+y)(x-y)-(x-y)^2+2y(x-y)]除以的值 2x+3y/5x-3y=3/5求x/y的值 已知5/x=3/y,求x+y/x+x-y/y-x^2-y^2/y^2的值 已知x/5=y/3,求x+y分之x+x-y分之y减y^2/x^2-y^2的值 x+y/3x-2y=5/3 求x:y的比值 已知3x-2y/x+y=5/3求x；y的值 已知x+y/3x-2y=5/3求x；y的值 已知5|x+y-3|+(x-2y)²=5,求x+y的值 求5x-2y=x-y=4x-3y-2的解 (x+y-5)+|3y-2x+10|=0,求 x,y的值 若2/x-1/y=3,求[y/x-y/x-y(x-y/x-x+y)]/x-2y/x的值