Question
$$8+9p = 9p-7$$
Answer
This equation has no solution.
Explanation
$$ \begin{aligned} 8+9p &= 9p-7&& \text{move the $ \color{blue}{ 9p } $ to the left side and $ \color{blue}{ 8 }$ to the right} \\[1 em]9p-9p &= -7-8&& \text{simplify left and right hand side} \\[1 em]9p-9p &= -15&& \\[1 em]0 &= -15&& \\[1 em] \end{aligned} $$
Since the statement $ \color{red}{ 0 = -15 } $ is FALSE, we conclude that the equation has no solution.
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