若|x-y-3|与|x+y-2009|互为相反数,求x-y/x+y的值.
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![若|x-y-3|与|x+y-2009|互为相反数,求x-y/x+y的值.](/uploads/image/z/10408350-30-0.jpg?t=%E8%8B%A5%7Cx-y-3%7C%E4%B8%8E%7Cx%2By-2009%7C%E4%BA%92%E4%B8%BA%E7%9B%B8%E5%8F%8D%E6%95%B0%2C%E6%B1%82x-y%2Fx%2By%E7%9A%84%E5%80%BC.)
若|x-y-3|与|x+y-2009|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-3|与|x+y-2009|互为相反数,求x-y/x+y的值.
因为|x-y-3|与|x+y-2009|互为相反数
所以|x-y-3|=|x+y-2009|=0
x-y=3 x+y=2009
x-y/x+y=3/2009
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