Question

\(7,5-3|5-2x|=-4,5\)

Answer 1

3|5-2x| = 7,5 - (-4,5) = 12

=> |5-2x| = 12 : 3 = 4

=> 5-2x=4 hoặc 5-2x=-4

=> x=1/2 hoặc x=9/2

Tk mk nha

Answer 2

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

=> 3|5-2x|=12

=> |5-2x| = 4

=> \(\orbr{\begin{cases}5-2x=4\\5-2x=-4\end{cases}\Rightarrow\orbr{\begin{cases}2x=1\\2x=9\end{cases}\Rightarrow\orbr{\begin{cases}x=\frac{1}{2}\\x=\frac{9}{2}\end{cases}}}}\)