Đáp án:

Giải thích các bước giải:

 `2(3x+1)+1/4-5=(2(3x-1))/5-3x+2/10`

`=>6x+2+1/4-5=(6x-2)/5-3x+1/5`

`=>6x-3+1/4=(6x-1)/5-3x`

`=>20.(6x-3+1/4)=20,((6x-1).5-3x)`

`=>120x-60+5=4.(6x-1)-60x`

`=>120x-55=24x-4-60x`

`=>120x-55=-36x-4`

`=>156x=51`

`=>x=51/156=17/52`

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