Question
$$7x+20 = 11x+5$$
Answer
$$ x = \dfrac{15}{4} $$
Explanation
$$ \begin{aligned} 7x+20 &= 11x+5&& \text{move the $ \color{blue}{ 11x } $ to the left side and $ \color{blue}{ 20 }$ to the right} \\[1 em]7x-11x &= 5-20&& \text{simplify left and right hand side} \\[1 em]-4x &= -15&& \text{ divide both sides by $ -4 $ } \\[1 em]x &= \frac{-15}{-4}&& \\[1 em]x &= \frac{15}{4}&& \\[1 em] \end{aligned} $$
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