\(x\div4\frac{1}{3}=-2,5\)
=> \(x\div\frac{13}{3}=\frac{-5}{2}\)
=> \(x=\frac{-65}{6}\)
\(7-\left|2x-1\right|=2\)
=> \(\left|2x-1\right|=5\)
=> \(\orbr{\begin{cases}2x-1=5\\2x-1=-5\end{cases}\Rightarrow\orbr{\begin{cases}2x=6\\2x=-4\end{cases}\Rightarrow}\orbr{\begin{cases}x=3\\x=-2\end{cases}}}\)
f, \(x:4\frac{1}{3}=-2,5\)
\(\Leftrightarrow x:\frac{13}{3}=-2,5\Leftrightarrow x=-2,5.\frac{13}{3}=-\frac{65}{6}\)
g, \(7-\left|2x-1\right|=2\)
\(\Leftrightarrow\left|2x-1\right|=5\)
\(\Leftrightarrow\orbr{\begin{cases}2x-1=5\\2x-1=-5\end{cases}\Leftrightarrow\orbr{\begin{cases}2x=6\\2x=-4\end{cases}\Leftrightarrow}\orbr{\begin{cases}x=3\\x=-2\end{cases}}}\)
