Question

add 7 to both sides; add -4 to both sides; subtract -4 from both sides; multiply both sides by -4; divide both sides by -4; combine like terms

Explanation:

Step1: Add 7 to both sides

$\frac{p}{-4} - 7 + 7 = -11 + 7$
$\frac{p}{-4} = -4$

Step2: Multiply by -4 on both sides

$\frac{p}{-4} \times (-4) = -4 \times (-4)$
$p = 16$

Answer:

The missing step is "Multiply both sides by -4", and the final value of $p$ is 16.