若x+3y/x=5/3.y/x的值是?

若x+3y/x=5/3.y/x的值是? 若2/x-1/y=3,求[y/x-y/x-y(x-y/x-x+y)]/x-2y/x的值 若x,y是正整数,且满足x(x+y)-y(x+y)=11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 若x-y不等于0,2x-3y=0,则分式(10x-11y)/(x-y)的值是（）?(10x-11y)/(x-y) =[(8x-8y)+(2x-3y)]/(x-y) =8为什么8X-8Y=8？(10x-11y)/(x-y)=[(8x-8y)+(2x-3y)]/(x-y)=8+(2x-3y)]/(x-y)=8+0=8 若4x-5y=0,则x+y分之x-y的值是 若(x-y)(x-3-y)=10,则x-y的值是? 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 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|=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. 初中数学：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|＝3,|y|=5,且|x+y|=-x-y,求x-y的值. 若4x-3y=0,则4x-5y/4x+5y的值是? 若x+y=-5,xy=3,求x/y+y/x的值