Đáp án:+Giải thích các bước giải:

 `1 . 3x -12/5 =-0,6`

`3x = -0,6 +12/5`

`3x =9/5`

`x=9/5 :3`

`x=3/5`

Vậy `x-3/5`

`2 . (-4)/5x -1/2 =1,25`

`-4/3x = 1,25 +1/2`

`-4/3x = 7/4`

`x=7/4 :(-4/3)`

`x=-21/16`

Vậy `x=-21/16`

`3 . -11/12x +0,25 =5/6`

`-11/12x = 5/6 -0,25`

`-11/12x = 7/12`

`x=7/12 : (-11/12)`

`x=-7/11`

Vậy `x=-7/11`

`4 . 0,2 + 2/3x =1/3`

`2/3x =1/3 -0,2`

`2/3x=2/15`

`x=2/15 :2/3`

`x=1/5`

Vậy `x=1/5`

`5 . -1,5 + 15/2x = 3/4`

`15/2x = 3/4 - (-1,5)`

`15/2x = 9/4`

`x=9/4 :15/2`

`x=3/10`

Vậy `x=3/10`

`6 . 5/11x +4 =6 1/11`

`5/11x = 6 1/11 -4`

`5/11x = 23/11`

`x=23/11 :5/11`

`x=23/5`

Vậy `x=23/5.`