1/13*{1-1/5*[1-1/7*(1-1/11)]}/451/493*377/943/429/391-38/455=?
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![1/13*{1-1/5*[1-1/7*(1-1/11)]}/451/493*377/943/429/391-38/455=?](/uploads/image/z/3960462-30-2.jpg?t=1%2F13%2A%7B1-1%2F5%2A%5B1-1%2F7%2A%281-1%2F11%29%5D%7D%2F451%2F493%2A377%2F943%2F429%2F391-38%2F455%3D%3F)
1/13*{1-1/5*[1-1/7*(1-1/11)]}/451/493*377/943/429/391-38/455=?
1/13*{1-1/5*[1-1/7*(1-1/11)]}/451/493*377/943/429/391-38/455=?
1/13*{1-1/5*[1-1/7*(1-1/11)]}/451/493*377/943/429/391-38/455=?
1/13*{1-1/5*[1-1/7*(1-1/11)]}/(451/493*377/943/429/391-38/455)
=1/13*{1-1/5*[1-1/7*10/11]}/(493/451*377/943*429/391-38/455)
=1/13*{1-1/5*[1-10/77]}/[(11*41)/(17*19)*(13*29)/(23*41)*(17/23)/(11*39)-38/455]
=1/13*{1-1/5*67/77}*(17*29)/(1/3-38/455)
=1/13*{1-67/385}*1365/341
=1/13*4/5*1365/341
=4*21/341
=84/341
1/13*{1-1/5*[1-1/7*(1-1/11)]}/(451/493*377/943/429/391-38/455)
=1/13*{1-1/5*[1-1/7*10/11]}/(493/451*377/943*429/391-38/455)
=1/13*{1-1/5*[1-10/77]}/[(11*41)/(17*19)*(13*29)/(23*41)*(17/23)/(11...
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1/13*{1-1/5*[1-1/7*(1-1/11)]}/(451/493*377/943/429/391-38/455)
=1/13*{1-1/5*[1-1/7*10/11]}/(493/451*377/943*429/391-38/455)
=1/13*{1-1/5*[1-10/77]}/[(11*41)/(17*19)*(13*29)/(23*41)*(17/23)/(11*39)-38/455]
=1/13*{1-1/5*67/77}*(17*29)/(1/3-38/455)
=1/13*{1-67/385}*1365/341
=1/13*4/5*1365/341
=4*21/341
=84/341
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