80/(x+y) + 48/(x-y) =9 64/(x+y) + 96/(x-y) =12 怎样解,要过程,希望各大侠指点

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80/(x+y)+48/(x-y)=964/(x+y)+96/(x-y)=12怎样解,要过程,希望各大侠指点80/(x+y)+48/(x-y)=964/(x+y)+96/(x-y)=12怎样解,要过程

80/(x+y) + 48/(x-y) =9 64/(x+y) + 96/(x-y) =12 怎样解,要过程,希望各大侠指点
80/(x+y) + 48/(x-y) =9 64/(x+y) + 96/(x-y) =12 怎样解,要过程,希望各大侠指点

80/(x+y) + 48/(x-y) =9 64/(x+y) + 96/(x-y) =12 怎样解,要过程,希望各大侠指点
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