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

* Hướng dẫn giải

 \(\begin{aligned} &1,5x - 2\frac{1}{3}x = 1,5 - \frac{2}{3}\\ &\frac{3}{2}x - \frac{7}{3}x = \frac{3}{2} - \frac{2}{3}\\ &\left( {\frac{3}{2} - \frac{7}{3}} \right)x = \frac{3}{2} - \frac{2}{3}\\ &\frac{{ - 5}}{6}x = \frac{5}{6}\\ &x = \frac{5}{6}:\left( { - \frac{5}{6}} \right)\\ &x = - 1 \end{aligned}\)