- (-3/4) - (2/3 + 1/4 )

2 câu trả lời

`- ( - 3/4 ) - ( 2/3 + 1/4 )`

`= 3/4 - ( 2/3 + 1/4 )`

`= 3/4 - 2/3 - 1/4`

`= 3/4 - 1/4 - 2/3`

`= 1/2 - 2/3`

`= 3/6 - 4/6`

`= ( - 1 )/6`

Đáp án:

$\dfrac{-1}6$

Giải thích các bước giải:

$-\dfrac{-3}4-\left(\dfrac23+\dfrac14\right)\\=\dfrac34-\dfrac23-\dfrac14\\=\dfrac{3-1}4-\dfrac23\\=\dfrac12-\dfrac23\\=\dfrac{-1}6$