=>\(\left|7x+1\right|=\left|5x+6\right|\)
=>\(\left[\begin{matrix}7x+1=5x+6\\7x+1=-5x-6\end{matrix}\right.\)
=>\(\left[\begin{matrix}7x-5x=6-1\\7x+5x=-6-1\end{matrix}\right.\)
=>\(\left[\begin{matrix}2x=5\\12x=-7\end{matrix}\right.\Rightarrow\left[\begin{matrix}x=\frac{5}{2}\\x=-\frac{7}{12}\end{matrix}\right.\)
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