Question
$$9x+25 = 13x-19$$
Answer
$$ x = 11 $$
Explanation
$$ \begin{aligned} 9x+25 &= 13x-19&& \text{move the $ \color{blue}{ 13x } $ to the left side and $ \color{blue}{ 25 }$ to the right} \\[1 em]9x-13x &= -19-25&& \text{simplify left and right hand side} \\[1 em]-4x &= -44&& \text{ divide both sides by $ -4 $ } \\[1 em]x &= \frac{-44}{-4}&& \\[1 em]x &= 11&& \\[1 em] \end{aligned} $$
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