(5x-6y)(x+y)=0(x≠0) 则x分之y=________
(5x-6y)(x+y)=0(x≠0) 则x分之y=________
x分之y+z=y分之z+x=z分之x+y(x+y+z不等于0),求x+y+z分之x+y-z
化简求值:已知【3x分之2-x+y分之2(3x分之x+y-x-y)】÷5x+3y=0
已知x-5y=0(y≠0),则代数式2x-3y/3x+6y
已知x²+y²+6y+10=0,则x+y=________
若3x-5y=0,则x+y/x=(),x-y/y=(),2x-3y/2x+3y=( )
若实数x、y满足x平方+y平方-4x-2y+5=0,求根号8y-2x分之(根号x)+y
已知2x-4y-5z=0,-3x+y+4z=0,(xyz≠0)则x:y:z=________
代数式x-1分之x中,字母的取值范围是_____.已知x-5y=0(y≠0),则代数式2x-3y分之3x+6y的值是__
若4x-5y=0,则x+y分之x-y的值是
若3x=7y,则y分之x= ,x:(x:y)=
若4x=5y(y不等于0)则y²分之x²-y²=多少