giúp mik với ạ tìm X a) 3x-8=24 b) 4-2x=16÷8 c) 1/3 – x |-1/2| = 1/3 ÷ 2/5 d) 4/3 – 2x = |-1/2| ÷ |2/3|

Đáp án:

Giải thích các bước giải:

 `3x-8=24 `

`3x=  24+8 `

`3x=32 `

`x=32 : 3 `

`x=32/3 `

`4-2x=16:8 `

`4-2x=2 `

`2x = 4-2 `

`2x=2 `

`x=2:2 `

`x=1 `

`1/3 – x.| -1/2| = 1/3 : 2/5 `

` 1/3 – x. 1/2 = 1/3 . 5/2 `

`1/3-x.1/2 = 5/6 `

` x.1/2 = 1/3 – 5/6 `

`x.1/2 = -1/2 `

`x= -1/2 : 1/2 `

`x= -1/2 . 2/1 `

`x=-2/2 `

`x=-1 `

`4/3 – 2x = |-1/2| : |2/3|`

`4/3 – 2x = 1/2 : 2/3 `

` 4/3 – 2x = 1/2 . 3/2 `

`4/3 – 2x = 3/4 `

` 2x = 4/3 – 3/4 `

`2x=7/12 `

`x= 7/12 : 2 `

`x=7/12 . 1/2 `

`x=7/24 `