tính tổng sau:A=3/11.6+3/16.21+3/21,26+…+3/61.66

Question

tính tổng sau:A=3/11.6+3/16.21+3/21,26+…+3/61.66

in progress 0
Hadley 3 tuần 2021-07-09T21:53:40+00:00 2 Answers 3 views 0

Answers ( )

    0
    2021-07-09T21:55:21+00:00

    =))

    0
    2021-07-09T21:55:35+00:00

    A=3/11.16+3/16.21+3/21,26+…+3/61.66

    A=3/5.(5/11.16+5/16.21+5/21.26+…+5/61.66)

    A=3/5.(1/11 – 1/16 + 1/16 – 1/21 + 1/21 – 1/26 + …  + 1/61 – 1/66)

    A=3/5.(1/11-1/66)

    A=3/5.5/66

    A=3/66

Leave an answer

Browse

35:5x4+1-9:3 = ? ( )