Tính `55/11.16+55/16.21+55/21.26+55/26.31+55/31.36+55/36.41`.

0 bình luận về “Tính `55/11.16+55/16.21+55/21.26+55/26.31+55/31.36+55/36.41`.”

1. `55/{11.16} + 55/{16.21} + 55/{21.21} + 55/{26.31} + 55/{31.36} + 55/{36.41}`

   = `11.(1/11 – 1/16 + 1/16 – 1/21 +…..+ 1/36 – 1/41)`

   = `11.(1/11 – 1/41)`

   = `11. 30/451`

   = `30/41`

    

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2. Đáp án + Giải thích các bước giải:

   `55/11.16+55/16.21+55/21.26+55/26.31+55/31.36+55/36.41`

   `=11(5/11.16+5/16.21+5/21.26+5/26.31+5/31.36+5/36.41)`

   `=11(1/11-1/16+1/16-1/21+1/21-1/26+1/26-1/31+1/31-1/36+1/36-1/41)`

   `=11(1/11-1/41)`

   `=1-11/41`

   `=41/41-11/41`

   `=30/41`

    

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