若|x+3|+|y-5|=0,求X,Y的值

已知:3x-5y=0,求x/y,x-y/y,x-y/x 若(x*x+y*y)(x*x+y*y)-4x*x*y*y=0,求代数式(x*x+5xy+y*y)/(x*x+2xy+y*y)的值 已知x.x+y.y-6x-8y+25=0,求3x.x+5y的值 若|3x-y|+(y-5)的平方=0,求x,y的值 若3x+5y=0,且y≠0,求x：y的值 若3x+5y=0,且y≠0,求x:y的值 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 已知|3x-y|+|x+y|=0,求x-y除以x*y的值. 若x^5+x^4y+x^4+x+y+1=0,且3x+2y=1,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 若|x|=3,|y|=5 且|x+y|=-(x+y )求x-y的值若|x|=3,|y|=5 且|x+y|=-(x+y )求y-x的值 若(x+y-5)²+|x-3y-17|-0,求x、y的值 若x+y=-5,xy=3,求x/y+y/x的值 若／X+Y-9／+（2X-Y+3)=0求X与Y的值 已知3y-5x=0,求x+y/y-x的值 (x+y-5)+|3y-2x+10|=0,求 x,y的值