$$9x-55 = 180$$
Answer
$$ x = \frac{235}{9} $$
Explanation
$$ \begin{aligned} 9x-55 &= 180&& \text{ move -55 to the right } \\[1 em]9x &= 180+55&& \\[1 em]9x &= 235&& \text{ divide both sides by $ 9 $ } \\[1 em]x &= \frac{235}{9}&& \\[1 em] \end{aligned} $$
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