已知36+(40+△)/(1-(1-1/3)*60%)=261,求△的值

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已知36+(40+△)/(1-(1-1/3)*60%)=261,求△的值
已知36+(40+△)/(1-(1-1/3)*60%)=261,求△的值

已知36+(40+△)/(1-(1-1/3)*60%)=261,求△的值
36+(40+△)/(1-(2/3)*0.6)=261
(40+△)/(1-(2/3)*0.6)=225
(40+△)/(1-0.4)=225
40+△=225*0.6
△=335