Tìm x, biết: a) 2x - 3 = x + 1/2 b) 4x - (2x + 1) = 3 - 1/3 + x

* Hướng dẫn giải

a)

$$\begin{gathered} 2x-3=x+\frac{1}{2} \\ x=\frac{1}{2}+3 \\ x=\frac{7}{2} \end{gathered}$$

b) 

$$\begin{gathered} 4x-\left(2x+1\right)=3-\frac{1}{3}+x \\ \begin{array}{l}x=3-\frac{1}{3}+1\\ x=\frac{11}{3}\end{array} \end{gathered}$$