Đáp án:

Giải thích các bước giải:

 ` x + 5/3 = 1 1/6 `

` x + 5/3 = 7/6 `

` x = 7/6 - 5/3 `

` x = - 1/2 `

Vậy ` x = - 1/2 `

``

`b)`

` - 3/4x - 3/5 = - 2 1/5 `

` - 3/4x = - 2 1/5 + 3/5 `

` - 3/4x = - 11/5 + 3/5 `

` - 3/4x = - 8/5 `

` x = 32/15 `

Vậy ` x = 32/15 `

``

`c)`

` 1 3/5 + x = 2 `

` x = 2 - 1 3/5 `

` x = 2 - 8/5 `

` x = 2/5 `

vậy ` x = 2/5 `

``

`d)`

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

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

` 2/3x = 11/12 `

` x = 11/8 `

Vậy ` x = 11/8 `

``

`e)`

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

` x = 2 1/3 + 2/3 `

` x = 7/3 + 2/3 `

` x = 9/3 `

` x = 3 `

Vậy ` x = 3 `

``

f)`

` 3/2 - 2/9x = 1/3 `

` 2/9x = 3/2 - 1/3 `

` 2/9x = 7/6 `

` x = 21/4 `

Vậy ` x = 21/4`