Question

giúp mk với

Answer 1

`25% - 1 1 / 2 - 1 / 4 + 0,25 : 1 / 2`

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

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

`= 0 - 2 / 2 = -1`

Answer 2

25%-1\(\dfrac{1}{2}\)-\(\dfrac{1}{4}+0,25:\dfrac{1}{2}\)
=\(\dfrac{1}{4}-\dfrac{3}{2}-\dfrac{1}{4}+\dfrac{1}{4}:\dfrac{1}{2}\)
=\(\dfrac{1}{4}-\dfrac{3}{2}-\dfrac{1}{4}+\dfrac{1}{2}\)
=\(\left(\dfrac{1}{4}-\dfrac{1}{4}\right)+\left(-\dfrac{3}{2}+\dfrac{1}{2}\right)\)
= -1