Tìm x, biết: |x| -1/2 =3/4

* Hướng dẫn giải

$$\begin{gathered} a\left)\left[\begin{array}{l}x=\frac{5}{4}\\ x=\frac{-5}{4}\end{array}\right. \\ b\right)\left[\begin{array}{l}x=\frac{3}{2}\\ x=\frac{-1}{2}\end{array}\right. \\ c)\left[\begin{array}{l}x=\frac{3}{2}\\ x=\frac{-1}{2}\end{array}\right. \end{gathered}$$

$$\begin{gathered} d\left)\left[\begin{array}{l}x=\frac{59}{40}\\ x=\frac{61}{40}\end{array}\right. \\ e\right)\left[\begin{array}{l}x=\frac{1}{3}\\ x=-1\end{array}\right. \\ f)\left[\begin{array}{l}x=\frac{1}{3}\\ x=-1\end{array}\right. \end{gathered}$$