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[[1/4-1/4÷2]×8/13+1÷61/2]÷0.01
人气:163 ℃ 时间:2020-06-08 17:15:07
解答
=[(1/4-1/4X1/2)X(8/13)+(2/61)]X100
=[(1/4-1/8)X(8/13)+2/61]X100
=[(1/8)X(8/13)+2/61]X100
=(1/13+2/61)X100
=8700/793
≈10.97
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