1.若|x-y|+|y-3|=0,求2x+y的值.
1.若|x-y|+|y-3|=0,求2x+y的值.
若X,Y互为相反数,且(X+Y+3)(X-Y-2)=0,求X,Y的值?
已知|3x-y|+|x+y|=0,求x-y除以x*y的值.
若|x+y-1|+(x-y-2)²=0,求代数式(x+2y)(x-2y)-(2x-y)(-y-2x)的值.
若x-y/x+y=5,求x-y/2x+2y+5x+5y/3x-3y的值
.若|x-y|+|y-3|=0,求2x+y的值.
1.若/x-3/+(2x-y)²+根号y+z=0,求x,y,z的值.
已知x*x-4xy+4y*y=0 求[2x(x+y)-y(x+y)]/(4x*x-4xy+y*y)的值?
若x、y满足2x+y=6,x-3y=1,求7y(x-3y)²-2(3y-x)³的值
已知|2x-3y|+|3x-y-1|=0,求x,y的值.
已知4x-2y=0,求x-y/3x+2y的值
若x^2+y^2-8x-10y+41=0,求x/y+y/x的值