Toán tính hợp lí A=(`1/3`+`12/67`+`13/41`)-(`79/67`-`28/41`) 05/12/2021 By Eden tính hợp lí A=(`1/3`+`12/67`+`13/41`)-(`79/67`-`28/41`)
`A=(1/3+12/67+13/41)-(79/67-28/41)` `A=1/3+12/67+13/41-79/67+28/41` `A=1/3+(12/67-79/67)+(13/41+28/41)` `A=1/3+(-1)+1` `A=1/3`
cho mk ctlhn nha
tự làm đó
`A=(1/3+12/67+13/41)-(79/67-28/41)`
`A=1/3+12/67+13/41-79/67+28/41`
`A=1/3+(12/67-79/67)+(13/41+28/41)`
`A=1/3+(-1)+1`
`A=1/3`