Question

7,5-|5-2x|=4,5

Answer 1

7,5-|5-2x|=4,5

=>|2x-5|=7,5-4,5=3

=>\(\left[{}\begin{matrix}2x-5=3\\2x-5=-3\end{matrix}\right.\)

=>\(\left[{}\begin{matrix}2x=8\\2x=2\end{matrix}\right.\)

=>\(\left[{}\begin{matrix}x=4\\x=1\end{matrix}\right.\)

Answer 2

\(7,5-\left|5-2x\right|=4,5\\ \Rightarrow\left|5-2x\right|=3\\ \Rightarrow\left[{}\begin{matrix}5-2x=3\\5-2x=-3\end{matrix}\right.\Rightarrow\left[{}\begin{matrix}2x=2\\2x=8\end{matrix}\right.\Rightarrow}\left[{}\begin{matrix}x=1\\x=4\end{matrix}\right.\)