Tìm x biết: ​\(\frac{7}{{12}} - \frac{x}{4} = \frac{1}{{12}}\)

* Hướng dẫn giải

 \(\begin{array}{l} \frac{7}{{12}} - \frac{x}{4} = \frac{1}{{12}}\\ \Rightarrow \frac{x}{4} = \frac{7}{{12}} - \frac{1}{{12}}\\ \Rightarrow \frac{x}{4} = \frac{6}{{12}}\\ \Rightarrow \frac{x}{4} = \frac{1}{2}\\ \Rightarrow 2x = 4\\ \Rightarrow x = 4:2 = 2 \end{array}\)