Đáp án `+` Giải thích các bước giải:

 Bài `5`:

`1).` `x + 1/2 = -5/3`

`x = (-5/3) - 1/2`

`x = -13/6`

Vậy, `x` = `-13/6`.

`2).` `1/3 - x = 3/5`

`x = 1/3 - 3/5`

`x = -4/15`

Vậy, `x` = `-4/15`

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

`x = 7/2 - 3/4`

`x = 11/4`

Vậy, `x` = `11/4`

`4).` `x - 4/3 = -7/9`

`x = (-7/9) + 4/3`

`x = 5/9`

Vậy, `x` = `5/9`.

`5).` `x - (-7/3) = 5/6`

`x = 5/6 + (-7/3)`

`x = -3/2`

Vậy, `x` = `-3/2`.

`6).` `x - 1/5 = 9/10`

`x = 9/10 + 1/5`

`x = 11/10`

Vậy, `x` = `11/10`

`7).` `x + 1/15 = 3/8`

`x = 3/8 - 1/15`

`x = 37/120`

Vậy, `x` = `37/120`

`8).` `x + 5/4 = 7/6`

`x = 7/6 - 5/4`

`x = -1/12`

Vậy, `x` = `-1/12`

`9).` `x - 2/7 =  1/35`

`x = 1/35 + 2/7`

`x = 11/35`

Vậy, `x` = `11/35`

`10).` `x - 1/5 = -7/10`

`x = (-7/10) + 1/5`

`x = -1/2`

Vậy, `x` = `-1/2`.