2 câu trả lời
Đáp án:
$2- \dfrac{-2}{3}$
$= \dfrac{2}{1}- \dfrac{-2}{3}$
$= \dfrac{6}{3}- \dfrac{-2}{3}$
$= \dfrac{6-(-2)}{3}$
$= \dfrac{8}{3}$
`2 - (-2)/3`
`= 2 + 2/3`
`= 6/3 + 2/3`
`= 8/3`
_____________
`(2 - (-2))/(3)`
`= (2 + 2)/3`
`= 4/3`