Question
$$5x+5 = 40-2x$$
Answer
$$ x = 5 $$
Explanation
$$ \begin{aligned} 5x+5 &= 40-2x&& \text{move the $ \color{blue}{ -2x } $ to the left side and $ \color{blue}{ 5 }$ to the right} \\[1 em]5x+2x &= 40-5&& \text{simplify left and right hand side} \\[1 em]7x &= 35&& \text{ divide both sides by $ 7 $ } \\[1 em]x &= \frac{35}{7}&& \\[1 em]x &= 5&& \\[1 em] \end{aligned} $$
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