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数学简算1/29({1/19[1/9(X-2)+17]+28}=1
人气:305 ℃ 时间:2020-04-16 23:15:39
解答
1/29({1/19[1/9(X-2)+17]+28}=1
1/19[1/9(X-2)+17]+28=29
1/19[1/9(X-2)+17]=29-28
1/19[1/9(X-2)+17]=1
1/9(X-2)+17=19
1/9(X-2)=19-17
1/9(X-2)=2
X-2=18
X=20
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