Question

giúp mình với, đag cần gấp

 

Answer 1

\(\dfrac{1}{3}\left|4-2x\right|=x+3\\ \Leftrightarrow\left|4-2x\right|=3x+9\\ \Leftrightarrow\left[{}\begin{matrix}4-2x=3x+9\\4-2x=-3x-9\end{matrix}\right.\\ \Leftrightarrow\left[{}\begin{matrix}-5x=5\\x=-13\end{matrix}\right.\\ \Leftrightarrow\left[{}\begin{matrix}x=-1\\x=-13\end{matrix}\right.\)