Question
$$4-4n = 19-4n+7$$
Answer
This equation has no solution.
Explanation
$$ \begin{aligned} 4-4n &= 19-4n+7&& \text{simplify left and right hand side} \\[1 em]-4n+4 &= -4n+26&& \text{move the $ \color{blue}{ -4n } $ to the left side and $ \color{blue}{ 4 }$ to the right} \\[1 em]-4n+4n &= 26-4&& \text{simplify left and right hand side} \\[1 em]-4n+4n &= 22&& \\[1 em]0 &= 22&& \\[1 em] \end{aligned} $$
Since the statement $ \color{red}{ 0 = 22 } $ is FALSE, we conclude that the equation has no solution.
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