`a) 3/8 - 1/6x = 1/4`
`1/6x = 3/8 - 1/4`
`1/6x = 3/8 - 2/8`
`1/6x = 1/8`
`x = 1/8 : 1/6`
`x = 1/8 . 6/1`
`x = 6/8 = 3/4.`
`b) 75%x + 1,25x = -1 1/2`
`3/4x + 5/4x = -3/2`
`(3/4 + 5/4)x = -3/2`
`2x = -3/2`
`x = -3/2 : 2`
`x = -3/2 . 1/2`
`x = -3/4.`
`c) |x - 2| `+ `1/3` = `2/3`
`|x - 2| = 2/3 - 1/3`
`|x - 2| = 1/3`
`x - 2 = 1/3` hoặc `-1/3`
`TH1 : x - 2 = 1/3`
`x = 1/3 + 2`
`x = 1/3 + 6/3`
`x = 7/3.`
`TH2 : x - 2 = -1/3`
`x = -1/3 + 2`
`x = -1/3 + 6/3`
`x = 5/3.`
