已知|2x-3y|+|3x-y-1|=0,求x,y的值.

已知:3x-5y=0,求x/y,x-y/y,x-y/x 已知|2x-3y|+|3x-y-1|=0,求x,y的值. 已知M={(x,y)|y=-x^2+mx-1},N={(x,y)|y=-x+3,0 已知X,Y满足|X-Y-1|+（X+Y-3)^2=0求X,Y的值 已知2x-y=0,求分式【1+（3*y*y*y/x*x*x-y*y*y）】/【1+（2y/x-y）】的值注：x*x*x-y*y*y=（x-y）*（x*x+xy+y*y） 已知x-y/x+y=3,求代数式5(x-y)/x+y-x+y/2(x-y) 已知：2x+y=6,x-3y=1 求7y(x-3y)(x-3y)-2(3y-x)(3y-x) 已知x-y=1,求[(x+2y)^2+(2x+y)(x-4y)-3(x+y)(x-y)]除以y的值大神们帮帮忙 已知x-y=1,求[(x+2y)²+(2x+y)(x-4y)-3(x+y)(x-y)]÷y的值 已知|x+y-3|+(x-y)2=0则 已知:x-2y+3=0 求x^2-(4y+1)x+4y^2+2y 已知x、y满足2/1|x-y|+|1-y|=0,求7x-3y的值 已知：x,y满足|2x-y|+|y-1/2|=0,求7x-3y的值. 已知x-3y=0,求(2x+y)/(x^2-2xy+y^2)X(x-y) 已知,x＞0,y＞0,x≠y,且x+y=x^2+y^2+xy,求证：1小于x+y小于4/3 已知实数x,y满足x^+y^+2x-2根号3y=0(1)x^+y^的最大值 （2）x+y的最小值 已知x-y=3,求[（x+y)(x-y)-(x-y)^2+2y(x-y)]除以的值 已知3x =2y 求x/x+y+y/x-y-y²/x²-y²