Tìm x biết ​\(\frac{{3x}}{5} - 1 = \frac{1}{2}\)

* Hướng dẫn giải

 \(\begin{array}{l} \frac{{3x}}{5} - 1 = \frac{1}{2}\\ \Rightarrow \frac{{3x}}{5} = \frac{1}{2} + 1\\ \Rightarrow \frac{{3x}}{5} = \frac{3}{2}\\ \Rightarrow 2.3x = 3.5\\ \Rightarrow 6x = 15\\ \Rightarrow x = \frac{{15}}{6} = \frac{5}{2} \end{array}\)