Question
$$2(x+2)+x = 3(x-1)+6$$
Answer
This equation has no solution.
Explanation
$$ \begin{aligned} 2(x+2)+x &= 3(x-1)+6&& \text{simplify left and right hand side} \\[1 em]2x+4+x &= 3x-3+6&& \\[1 em]3x+4 &= 3x+3&& \text{move the $ \color{blue}{ 3x } $ to the left side and $ \color{blue}{ 4 }$ to the right} \\[1 em]3x-3x &= 3-4&& \text{simplify left and right hand side} \\[1 em]3x-3x &= -1&& \\[1 em]0 &= -1&& \\[1 em] \end{aligned} $$
Since the statement $ \color{red}{ 0 = -1 } $ is FALSE, we conclude that the equation has no solution.
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