若丨x-y+3丨与丨x-y-1999丨互为相反数,求x+y/x-y的值
若丨x-y+3丨与丨x-y-1999丨互为相反数,求x+y/x-y的值
已知(x+3)^2与丨y-2丨互为相反数,求x^y的值,
已知丨x+y+1丨与(x-2y)²互为相反数,试求x、y的值.
|x-y+3|与|x+y-99|互为相反数,求x-y除以x+y的值
若|x+y|与|2y-3|互为相反数,求2x+y的值
若|x+y|与|2y-3|互为相反数,求2x+y的值.
答好送100分已知|x-y|与(y+x)互为相反数,求x+y的值
问:已知X+Y互为相反数,求X+Y与Y分之X的值
若|3-x|与|x+y|互为相反数,求(x-y)/xy的值.
若|x-y+3|与|x+y-1999|互为相反数,求x+2yx−y
若|x-y+3|与|x+y-1999|互为相反数,求x+yx−y
若丨2x+6丨与丨3-y丨互为相反数,则x/y=?