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36+(40+△)除【1-(1-3分之1)x5分之3】等于261,求△的值?有算式,
人气:275 ℃ 时间:2020-01-26 04:51:16
解答
36+(40+△)/[1-(1-1/3)x3/5]=261
(40+△)/[1-(1-1/3)x3/5] = 225
(40+△)/[1-2/5]=225
(40+△)= 225*3/5
40+△ = 135
△ = 95
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