b,-5/9 nhân 7/3 +6/13 nhân -5/9 +3 và 7/9 26/07/2021 Bởi Piper b,-5/9 nhân 7/3 +6/13 nhân -5/9 +3 và 7/9
`-5/9` `.` `7/3` `+` `6/13` `.` `-5/9` `+` `3` `7/9` `=` `-5/9` `.` `(7/3 + 6/13)` `+` `34/9` `=` `-5/9` `.` `(91/39 + 18/39)` `+` `34/9` `=` `-5/9` `.` `109/39` `+` `34/9` `=` `-545/351` `+` `34/9` `=` `781/351` $#Nagisa#$ Bình luận
Đáp án: `(-5)/9 × 7/3 + 6/13 × (-5)/9 + 3 7/9` `= (-5)/9 × 7/3 + 6/13 × (-5)/9 + 34/9` `= (-5)/9 × (7/3 + 6/13) + 34/9` `= (-5)/9 × 109/39+ 34/9` `= (-545)/351 + 34/9` `= 781/351` Bình luận
`-5/9` `.` `7/3` `+` `6/13` `.` `-5/9` `+` `3` `7/9`
`=` `-5/9` `.` `(7/3 + 6/13)` `+` `34/9`
`=` `-5/9` `.` `(91/39 + 18/39)` `+` `34/9`
`=` `-5/9` `.` `109/39` `+` `34/9`
`=` `-545/351` `+` `34/9`
`=` `781/351`
$#Nagisa#$
Đáp án:
`(-5)/9 × 7/3 + 6/13 × (-5)/9 + 3 7/9`
`= (-5)/9 × 7/3 + 6/13 × (-5)/9 + 34/9`
`= (-5)/9 × (7/3 + 6/13) + 34/9`
`= (-5)/9 × 109/39+ 34/9`
`= (-545)/351 + 34/9`
`= 781/351`