Em tách câu hỏi ra nhé
\(\begin{array}{l}
Bai\,2)\,\\
1)\,\,\dfrac{x}{{12}} - \dfrac{5}{6} = \dfrac{1}{{12}}\\
\dfrac{x}{{12}} - \dfrac{{10}}{{12}} = \dfrac{1}{{12}}\\
x - 10 = 1\\
x = 11\\
2)\,\dfrac{2}{3} - 1\dfrac{4}{{15}}x = - \dfrac{3}{5}\\
\dfrac{2}{3} - \dfrac{{19}}{{15}}x = - \dfrac{3}{5}\\
\dfrac{{19}}{{15}}x = \dfrac{2}{3} - \left( { - \dfrac{3}{5}} \right)\\
\dfrac{{19}}{{15}}x = \dfrac{{19}}{{15}}\\
x = \dfrac{{19}}{{15}}:\dfrac{{19}}{{15}}\\
x = 1
\end{array}\)
