Toán thực hiện các phép tính sau: M=20/112+20/280+20/520+20/832 06/10/2021 By Iris thực hiện các phép tính sau: M=20/112+20/280+20/520+20/832
Đáp án: Giải thích các bước giải: M=20/112+20/280+20/520+20/832 M= 20/8.14+ 20/14.20+ 20/20.26+ 20/26.32 M= 20.( 1/8.14+ 1/14.20+ 1/20.26+1/26.32) M= 20/6.( 6/8.14+6/14.20+ 6/20.26+ 6/26.32) M= 10/3.( 1/8- 1/14+ 1/14- 1/20+….+ 1/26- 1/32) M= 10/3.( 1/8- 1/32) M= 10/3.3/32 M= 5/16 Vậy M= 5/16 Chúc bạn học tốt! Trả lời
`20/112+20/280+20/520+20/832` `= 20(1/112+1/280+1/520+1/832)` `= 20(1/(8.14)+1/(14.20)+1/(20.26)+1/(26.32))` `= 20(6/(8.14)+6/(14.20)+6/(20.26)+6/(26.32))` `= 10/3.(1/8-1/14+1/14-1/20+1/20-1/26+1/26-1/32)` `= 10/3.(1/8-1/32)` `= 10/3.3/32` `= 5/16` Trả lời
Đáp án:
Giải thích các bước giải:
M=20/112+20/280+20/520+20/832
M= 20/8.14+ 20/14.20+ 20/20.26+ 20/26.32
M= 20.( 1/8.14+ 1/14.20+ 1/20.26+1/26.32)
M= 20/6.( 6/8.14+6/14.20+ 6/20.26+ 6/26.32)
M= 10/3.( 1/8- 1/14+ 1/14- 1/20+….+ 1/26- 1/32)
M= 10/3.( 1/8- 1/32)
M= 10/3.3/32
M= 5/16
Vậy M= 5/16
Chúc bạn học tốt!
`20/112+20/280+20/520+20/832`
`= 20(1/112+1/280+1/520+1/832)`
`= 20(1/(8.14)+1/(14.20)+1/(20.26)+1/(26.32))`
`= 20(6/(8.14)+6/(14.20)+6/(20.26)+6/(26.32))`
`= 10/3.(1/8-1/14+1/14-1/20+1/20-1/26+1/26-1/32)`
`= 10/3.(1/8-1/32)`
`= 10/3.3/32`
`= 5/16`