Tìm \(x \in \mathbb{Z}\) biết: \(2x - 7 = - \frac{6}{{15}}:\frac{2}{5}\)

* Hướng dẫn giải

\(2x - 7 =  - \frac{6}{{15}}:\frac{2}{5}\)

\(\begin{array}{l}2x - 7 =  - \frac{6}{{15}}:\frac{2}{5}\\2x - 7 =  - \frac{6}{{15}} \cdot \frac{5}{2}\\2x - 7 =  - 1\\2x =  - 1 + 7\\2x = 6\\x = 3\end{array}\)

Vậy \(x = 3\).