Tìm x, biết: a) |x| - 3/4 = 5/3 b) |x - 3/2| = 1

* Hướng dẫn giải

a) $\left|x\right|-\frac{3}{4}=\frac{5}{3}\Rightarrow \left|x\right|=\frac{29}{12}\Rightarrow \left[\begin{array}{l}x=\frac{29}{12}\\ x=\frac{-29}{12}\end{array}\right.$

b) $\left|x-\frac{3}{2}\right|=1\Rightarrow \left[\begin{array}{l}x-\frac{3}{2}=1\\ x-\frac{3}{2}=-1\end{array}\right.\Rightarrow \left[\begin{array}{l}x=\frac{5}{2}\\ x=\frac{1}{2}\end{array}\right.$