Question
$$3(x+1) = 2(x-1)$$
Answer
$$ x = -5 $$
Explanation
$$ \begin{aligned} 3(x+1) &= 2(x-1)&& \text{simplify left and right hand side} \\[1 em]3x+3 &= 2x-2&& \text{move the $ \color{blue}{ 2x } $ to the left side and $ \color{blue}{ 3 }$ to the right} \\[1 em]3x-2x &= -2-3&& \text{simplify left and right hand side} \\[1 em]x &= -5&& \\[1 em]x &= -5&& \\[1 em] \end{aligned} $$
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