丨y+2丨+(x+5)²=0,则x-y=______.
若|3x-y-7|+(5x+2y-8)2=0,则x-y=______.
若3x-4y=0,则x/y=______,(x-y)/y=______,(3x+2y)/(2x+3y)=_____.
若|y+2|+(x+5)2=0,则x-y=______.
已知(x+y+2)2+|2x-3y-1|=0,则x+y=______.
已知2x+3y=5,则6x-4y-2(x-5y)=______.
如果|x-2y+1|+|2x-y-5|=0,则x+y的值是______.
已知(x-3)2+|2x-3y+6|=0,则x=______,y=______.
1.若3x-2y=0,则(x+y):(x-y)=______
若2x-5y=0,且x不等于0,则(6x-5y)/(6x+5y)的值是______.
若|x-y+2|与(x+y-1)2互为相反数,则x=______,y=______.
若|x+3|+(y-2)2=0,则x-2y=______.
已知|x-3|+(y+2)2=0,则x+y=______.