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

* Hướng dẫn giải

\(\begin{array}{l}\,\frac{1}{3}.x + \frac{1}{2} = \frac{5}{6}\\\,\,\,\,\,\,\frac{1}{3}.x = \frac{5}{6} - \frac{1}{2}\\\,\,\,\,\,\,\frac{1}{3}x = \frac{1}{3}\\\,\,\,\,\,\,\,\,\,\,x = 1\end{array}\)

Chọn D