|x-7|=2x-3

* Hướng dẫn giải

$\begin{array}{l}\left|x-7\right|=2x-3\left(7\right)\\ +)x\ge 7\Rightarrow \left(7\right)\iff x-7=2x-3\iff x=-4(ktm)\\ +)x<7\Rightarrow 7\iff 7-x=2x-3\iff x=\frac{10}{3}(tm)S=\left\{\frac{10}{3}\right\}\end{array}$