$$-648x\cdot2+153x-9 = 0$$
Answer
$$ x = -\frac{1}{127} $$
Explanation
$$ \begin{aligned} -648x\cdot2+153x-9 &= 0&& \text{simplify left side} \\[1 em]-1296x+153x-9 &= 0&& \\[1 em]-1143x-9 &= 0&& \text{ move the constants to the right } \\[1 em]-1143x &= 9&& \text{ divide both sides by $ -1143 $ } \\[1 em]x &= -\frac{9}{1143}&& \\[1 em]x &= -\frac{1}{127}&& \\[1 em] \end{aligned} $$
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