Question
$$4b+23 = 23-4b$$
Answer
$$ b = 0 $$
Explanation
$$ \begin{aligned} 4b+23 &= 23-4b&& \text{move the $ \color{blue}{ -4b } $ to the left side and $ \color{blue}{ 23 }$ to the right} \\[1 em]4b+4b &= 23-23&& \text{simplify left and right hand side} \\[1 em]8b &= 0&& \text{ divide both sides by $ 8 $ } \\[1 em]b &= \frac{0}{8}&& \\[1 em]b &= 0&& \\[1 em] \end{aligned} $$
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