Đáp án:
`|2x - 1/3| + 5/6 = 1`
`=> |2x - 1/3| = 1 - 5/6`
`=> |2x - 1/3| = 1/6`
`=>` \(\left[ \begin{array}{l}2x - 1/3 = 1/6\\2x - 1/3 = -1/6\end{array} \right.\)
`=>` \(\left[ \begin{array}{l}2x = 1/2\\2x = 1/6\end{array} \right.\)
`=>` \(\left[ \begin{array}{l}x = 1/4\\x = 1/12\end{array} \right.\)
Vậy `x ∈ {1/4 ; 1/12}`