Đáp án:
\(x = - \dfrac{{97}}{{248}}\)
Giải thích các bước giải:
\(\begin{array}{l}
2)\dfrac{{6\left( {x + 3} \right) + 3\left( {\dfrac{{2x - 5}}{2} - 4x - \dfrac{{2x - 2}}{5}} \right)}}{{12}} = \dfrac{{4\left( {2 - 5x - \dfrac{{6 - 3x}}{4}} \right) - 12x}}{{12}}\\
\to 6x + 18 + \dfrac{{6x - 15}}{2} - 12x - \dfrac{{6x - 6}}{5} = 8 - 20x - 6 + 3x - 12x\\
\to 23x + 16 + \dfrac{{6x - 15}}{2} - \dfrac{{6x - 6}}{5} = 0\\
\to \dfrac{{230x + 160 + 5\left( {6x - 15} \right) - 2\left( {6x - 6} \right)}}{{10}} = 0\\
\to 230x + 160 + 30x - 75 - 12x + 12 = 0\\
\to 248x = - 97\\
\to x = - \dfrac{{97}}{{248}}
\end{array}\)
