Đáp án:
`b) (x - 1/2)^2/-3 = (1/24)/(x - 1/2)`
`⇒ (x - 1/2)^2 . (x - 1/2) = -3 . 1/24`
`⇒ (x - 1/2)^3 = -1/8`
`⇒ (x - 1/2)^3 = (-1/2)^3`
`⇒ x - 1/2 = -1/2`
`⇒ x = -1/2 + 1/2`
`⇒ x = 0` thỏa mãn `x`
Vậy `x = 0`
`c) 2 (x - 1/2) - 5 (x + 3/5) = -x + 1/3`
`⇒ 2x - 1/2 - 5x + 3/5 = -x + 1/3`
`⇒ -2x = 13/3`
`⇒ x = 13/3 : (-2)`
`⇒ x = -13/6`
Vậy `x = -13/6`
