若丨2x+6丨+丨3-y丨=0,则 y分x=( )
若丨3x+4y-1丨+(3y+2x-5)²=0,则x= ,y=
1>若x-y=5,则14-2x+2y=?2>已知丨x+5y-6丨+(3x-6y-4)的平方=0,则(x+y)=?
若丨2x+6丨与丨3-y丨互为相反数,则x/y=?
若 丨3x+y+6丨+ 根号(x+y+1)=0成立,求x和y
因式分解解方程 (4-x)(3x+6)=0 4y(y-1)=2y(y-1)
已知丨x+2y+3丨+(2x+y)=0,求x-y的值
丨x+2y+3丨+(2x+y)²=0,求x-y的值
若3x-5y=0,则x+y/x=(),x-y/y=(),2x-3y/2x+3y=( )
若(x-y)/(x+y)=3 则(x+2y)/(6x-7y)等于
已知x-5y=0(y≠0),则代数式2x-3y/3x+6y
丨x+y+4丨+(x-2)²=0,则3x+2y=
若丨3x-1丨+(2x+1)²=0 求2x²+3y²/x-y