Tìm x biết: ​\(\frac{1}{{150}} - x = \frac{{ - 4}}{{25}}\)

* Hướng dẫn giải

Ta có

\(\begin{array}{l} \frac{1}{{150}} - x = \frac{{ - 4}}{{25}}\\ \Rightarrow - x = \frac{{ - 4}}{{25}} - \frac{1}{{150}}\\ \Rightarrow - x = \frac{{ - 24}}{{150}} - \frac{1}{{150}}\\ \Rightarrow - x = \frac{{ - 25}}{{25}} = \frac{{ - 1}}{6}\\ \Rightarrow x = \frac{1}{6} \end{array}\)