`|\frac{1}{2}x + \frac{2}{3}| = | \frac{3}{4}x + \frac{5}{6}|`
`⇒` \(\left[ \begin{array}{l}\frac{1}{2}x + \frac{2}{3}=\frac{3}{4}x + \frac{5}{6}\\\frac{1}{2}x + \frac{2}{3}=-(\frac{3}{4}x + \frac{5}{6})\end{array} \right.\)
`⇒`\(\left[ \begin{array}{l}\frac{5}{4}x + \frac{2}{3}= \frac{5}{6}\\\frac{-1}{4}x + \frac{2}{3} =\frac{-5}{6} \end{array} \right.\)
`⇒`\(\left[ \begin{array}{l}\frac{5}{4}x =\frac{1}{6}x \\\frac{-1}{4}x=\frac{-9}{6}x \end{array} \right.\)
`⇒`\(\left[ \begin{array}{l}x=\frac{2}{15}\\x=-4\end{array} \right.\)
` XIN` `HAY` `NHẤT`
