|x-y+3|与|x+y-99|互为相反数,求x-y除以x+y的值rt

|x-y+3|与|x+y-99|互为相反数,求x-y除以x+y的值rt |x-y+3|与|x+y-1999|互为相反数,求x+y/x-y的值 若X-4的绝对值与2乘以Y+3绝对值互为相反,求2X-2乘以Y的绝对值急 若|X-3|与|Y+2|互为相反数,求x+y+99的值! :|x-3|与|y+2|互为相反数,求x+y+99的值 |x+3|与|y+2|互为相反数,求x+y+99的值 先化简,再求值：（2x^2-3y^3)(-2x^2-3y^3)-(-3x^2-3y^3)^2,其中x,y满足|x+1|与（1-y）^2互为相反··先化简，再求值：（2x^2-3y^3)(-2x^2-3y^3)-(-3x^2-3y^3)^2,其中x,y满足|x+1|与（1-y）^2互为相反数 若|x+3|与|2y-3|互为相反数,求x+y:x-y的值如题 若｜x-y-5｜与｜2x+3y-15｜互为相反数,则x+y＝? 若|x-3|与|y+5|互为相反数求x+y/x-y的值 ：已知x与y互为相反数,且2x-y=3,则x-y= 如果x,y互为相反,满足/a-2y-3/+(5x+9)^2=0,那么a=? 若x、y互为相反数,则x+2x+3x+...100x+100y+99y+98y+...+y 若|x-y+3|与|x+y-2013|互为相反数,求x+2y/x-y的值. 若|x+y-1|与(x-y+3)的平方,互为相反数,则(x+y)(x-y) 若丨x-y+3丨与丨x-y-1999丨互为相反数,求x+y/x-y的值 若|x-y-3|与|x+y-2009|互为相反数,求x-y/x+y的值. 若|x+y|与|2y-3|互为相反数,求2x+y的值.