Giúp mik vóie mn ơi mik cần gắp lắm ạ

Đáp án `+` Giải thích các bước giải:

 `a)` `x - (-6,51) = 1,92 + 2,06`

`=>` `x + 6,51 = 1,92 + 2,06`

`=>` `x + 6,51 = 3,98`

`=>` `x = 3,98 - 6,51`

`=>` `x = -2,53`

Vậy `x = -2,53`

____________________________________

`b)` `2x + 3,17 = 6 + x`

`=>` `2x - x = 6 - 3,17`

`=>` `x = 2,83`

Vậy `x = 2,83`

____________________________________

`c)` `7,2 + 2x = -8,8 - 3,92`

`=>` `2x = -12,72`

`=>` `2x = -12,72 - 7,2`

`=>` `2x = -19,92`

`=>` `x = -19,92 : 2`

`=>` `x = -9,96`

Vậy `x = -9,96`

____________________________________

`d)` `10,8 - x = 0,24 - (-12,8 - 2x)`

`=>` `-x + 10,8 = 0,24 + 12,8 + 2x` 

`=>` `-x + 10,8 = 13,04 + 2x`

`=>` `-x - 2x = 13,04 - 10,8`

`=>` `-3x = 2,24`

`=>` `-x = 2,24 : (-3)`

`=>` `-x ~~ -0,75`

`=>` `x ~~ 0,75`

Vậy `x ~~ 0,75`