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