Question

|4-x|=|-8|

Answer 1

\(\left|4-x\right|=\left|-8\right|\)

\(\Leftrightarrow\left[{}\begin{matrix}4-x=-8\\4-x=8\end{matrix}\right.\)

\(\Leftrightarrow\left[{}\begin{matrix}x=12\\x=-4\end{matrix}\right.\)

 

Answer 2

|4 - x| = |-8|

=> |4 - x| = 8

\(\Rightarrow\left[{}\begin{matrix}4-x=8\\4-x=-8\end{matrix}\right.\)

\(\Rightarrow\left[{}\begin{matrix}x=4-8=-4\\x=4+8=12\end{matrix}\right.\)

Vậy: x = -4 hoặc x = 12