$$ \begin{aligned} 4 &= 5(p-5)&& \text{simplify right side} \\[1 em]4 &= 5p-25&& \text{ swap the left and right side of the equation } \\[1 em]5p-25 &= 4&& \text{ move -25 to the right } \\[1 em]5p &= 4+25&& \\[1 em]5p &= 29&& \text{ divide both sides by $ 5 $ } \\[1 em]p &= \frac{29}{5}&& \\[1 em] \end{aligned} $$
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