2/(a+2b) + 5/(3a-b) = 3/2 3/(a+2b) - 13/6 = 7/(b-3a)2/(a+2b) + 5/(3a-b) = 3/23/(a+2b) - 13/6 = 7/(b-3a)

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2/(a+2b)+5/(3a-b)=3/23/(a+2b)-13/6=7/(b-3a)2/(a+2b)+5/(3a-b)=3/23/(a+2b)-13/6=7/(b-3a)2/(a+2b)+5/(3a

2/(a+2b) + 5/(3a-b) = 3/2 3/(a+2b) - 13/6 = 7/(b-3a)2/(a+2b) + 5/(3a-b) = 3/23/(a+2b) - 13/6 = 7/(b-3a)
2/(a+2b) + 5/(3a-b) = 3/2 3/(a+2b) - 13/6 = 7/(b-3a)
2/(a+2b) + 5/(3a-b) = 3/2
3/(a+2b) - 13/6 = 7/(b-3a)

2/(a+2b) + 5/(3a-b) = 3/2 3/(a+2b) - 13/6 = 7/(b-3a)2/(a+2b) + 5/(3a-b) = 3/23/(a+2b) - 13/6 = 7/(b-3a)

小朋友,这是很简单的题,自己做吧