Question
$$5r+3 = 2r$$
Answer
$$ r = -1 $$
Explanation
$$ \begin{aligned} 5r+3 &= 2r&& \text{move the $ \color{blue}{ 2r } $ to the left side and $ \color{blue}{ 3 }$ to the right} \\[1 em]5r-2r &= -3&& \text{simplify left side} \\[1 em]3r &= -3&& \text{ divide both sides by $ 3 $ } \\[1 em]r &= -\frac{3}{3}&& \\[1 em]r &= -1&& \\[1 em] \end{aligned} $$
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