Đáp án:
Giải thích các bước giải:
`|2x-3|=2x-3`
\(\left[ \begin{array}{l}2x-3=2x-3\\2x-3=-(2x-3)\end{array} \right.\) `=>`\(\left[ \begin{array}{l}2x-3-(2x-3)=0\\2x-3+ 2x-3=0\end{array} \right.\)
`=>`\(\left[ \begin{array}{l}x∈Z\\4x-6=0\end{array} \right.\) `=>` \(\left[ \begin{array}{l}x∈Z\\x=3/2\end{array} \right.\)
`S ∈ {Z, 3/2}`