tìm x x - 11/5 = 2/5 : 2/3

* Hướng dẫn giải

$\frac{\begin{array}{l}x-\frac{11}{5}=\frac{2}{5}:\frac{2}{3}\\ x-\frac{11}{5}=\frac{2}{5}\times \frac{3}{2}\\ x-\frac{11}{5}=\frac{3}{5}\\ x=\frac{3}{5}+\frac{11}{5}=\frac{14}{5}\end{array}}{}$