a)3.x+1=-44 b)5.x-28=-77 c)12-3.x=-36 d)2.(4.x-46)-116=0

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1. `a)3x+1=-44-`

   `3x=44-1

   `3x=-45`

   `x=-45:3`

   `x=-15`

   `b)5x-28=-77`

   `5x=-77+28`

   `5x=-49`

   `x=49/5`

   `c)12-3x=-36`

   `-3x=-36-12`

   `-3x=-48`

   `x=-48:-3`

   `x=16`

   `d)2(4x-46)-116=0`

   `8x-92=0+116`

   `8x=116+92`

   `8x=208`

   `8x=208:8`

   `x=26`

   Xin hay nhất ạ.

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2. $\text{Đáp án + Giải thích các bước giải:}$

   `a//3x+1=-44`

   `=>3x=-44-1`

   `=>3x=-45`

   `=>x=-45:3`

   `=>x=-15`

   `b//5x-28=-77`

   `=>5x=-77+28`

   `=>5x=-49`

   `=>x=-(49)/(5)`

   `c//12-3x=-36`

   `=>3x=12-(-36)`

   `=>3x=12+36`

   `=>3x=48`

   `=>x=48:3`

   `=>x=16`

   `d//2(4x-46)-116=0`

   `=>2(4x-46)=116`

   `=>4x-46=116:2`

   `=>4x-46=58`

   `=>4x=58+46`

   `=>4x=104`

   `=>x=26`

    

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