Giải thích các bước giải:
$\begin{array}{l}
a)\left( {3x - 4} \right).9 - 3.\left( {9x - 5} \right) = 2\left( {5x + 1} \right)\\
\Leftrightarrow 27x - 36 - 27x + 15 = 10x + 2\\
\Leftrightarrow 10x = - 23\\
\Leftrightarrow x = \dfrac{{ - 23}}{{10}}\\
b)11\left( {2 - 3x} \right) - \left( {4x - 2} \right).8 = - 3\left( {2x - 5} \right)\\
\Leftrightarrow 22 - 33x - 32x + 16 = - 6x + 15\\
\Leftrightarrow 59x = 23\\
\Leftrightarrow x = \dfrac{{23}}{{59}}\\
c)\left( {4x - 5} \right).6 - 4\left( {6x + 2} \right) = - 7x - 5\\
\Leftrightarrow 24x - 30 - 24x - 8 = - 7x - 5\\
\Leftrightarrow 7x = 33\\
\Leftrightarrow x = \dfrac{{33}}{7}\\
d)\left( {4x - 3} \right).2 - 3\left( {13x + 4} \right) = 9\left( {2x - 1} \right) - 3\left( {x - 2} \right)\\
\Leftrightarrow 8x - 6 - 39x - 12 = 18x - 9 - 3x + 6\\
\Leftrightarrow - 31x - 18 = 15x - 3\\
\Leftrightarrow 46x = - 15\\
\Leftrightarrow x = \dfrac{{ - 15}}{{46}}
\end{array}$
