Tìm x biết ​\(\frac{2}{3} + \frac{1}{6}(2x + 2) = \frac{5}{6}\)

* Hướng dẫn giải

 \(\begin{aligned} &\frac{2}{3} + \frac{1}{6}(2x + 2) = \frac{5}{6}\\ &\frac{1}{6}(2x + 2) = \frac{5}{6} - \frac{2}{3}\\ &\frac{1}{6}(2x + 2) = \frac{1}{6}\\ &2x + 2 = \frac{1}{6}:\frac{1}{6}\\ &2x + 2 = 1\\ &2x = 1 - 2\\ &2x = - 1\\ &x = - \frac{1}{2} \end{aligned}\)