Đáp án + giải thích các bước giải:

`e.` `3x-5/3=x-1/4`

`3x-x=-1/4-5/3`

`2x=-23/12`

`x=-23/24`.

Vậy `x=-23/24`.

`f.` `(1/3x-2/3)-(-1/3x+1)=0,75`

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

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

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

`2/3x-2/3=7/4`

`2/3x=7/4+2/3`

`2/3x=29/12`

`x=29/8`.

Vậy `x=29/8`.

`h.` `(2x-4)^4=(-25/4)^2`

`(2x-4)^4=[(5/2)^2]^2`

`(2x-4)^4=(5/2)^4`

TH`1`.

`2x-4=5/2`

`2x=13/2`

`x=13/4`.

TH`2`.

`2x-4=-5/2`

`2x=3/2`

`x=3/4`.

Vậy `x``in``{13/4;3/4}`.