giúp mnk nha 55/11x 6 + 55/16,2 + 55/ 21 x 26 + 55/26,31 + 55 / 36×41 16/08/2021 Bởi Arya giúp mnk nha 55/11x 6 + 55/16,2 + 55/ 21 x 26 + 55/26,31 + 55 / 36×41
Đáp án: `30/41` Giải thích các bước giải: `55/(11xx16)+55/(16xx21)+55/(21xx26)+55/(26xx31)+55/(36xx41)` `=11xx(5/(11xx16)+5/(16xx21)+5/(21xx26)+5/(26xx31)+5/(31xx36)+5/(36xx41))` `=11xx(1/11-1/16+1/16-1/21+1/21-1/26+1/26-1/31+1/31-1/36+1/36-1/41)` `=11xx(1/11-1/41)` `=11xx(41/451-11/451)` `=11xx30/451` `=30/41` Bình luận
` (55)/(11xx 16) + 55/(16xx21) + 55/( 21 xx 26 )+ 55/(26xx31) + 55 / (36xx41)` `=11xx(5/(11xx16)+5/(16xx21)+5/(21xx26)+5/(26xx31)+5/(31xx36)+5/(36xx41))` `=11xx(1/11-1/16+1/16-1/21+1/21-1/26+1/26-1/31+1/31-1/36+1/36-1/41)` `=11xx(1/11-1/41)` `=11xx 30/451` `=30/41` Bình luận
Đáp án:
`30/41`
Giải thích các bước giải:
`55/(11xx16)+55/(16xx21)+55/(21xx26)+55/(26xx31)+55/(36xx41)`
`=11xx(5/(11xx16)+5/(16xx21)+5/(21xx26)+5/(26xx31)+5/(31xx36)+5/(36xx41))`
`=11xx(1/11-1/16+1/16-1/21+1/21-1/26+1/26-1/31+1/31-1/36+1/36-1/41)`
`=11xx(1/11-1/41)`
`=11xx(41/451-11/451)`
`=11xx30/451`
`=30/41`
` (55)/(11xx 16) + 55/(16xx21) + 55/( 21 xx 26 )+ 55/(26xx31) + 55 / (36xx41)`
`=11xx(5/(11xx16)+5/(16xx21)+5/(21xx26)+5/(26xx31)+5/(31xx36)+5/(36xx41))`
`=11xx(1/11-1/16+1/16-1/21+1/21-1/26+1/26-1/31+1/31-1/36+1/36-1/41)`
`=11xx(1/11-1/41)`
`=11xx 30/451`
`=30/41`