Final answer:
To solve the equation p + 20 = 27, subtract 20 from both sides of the equation to isolate the variable p. The value of p is 7.
Step-by-step explanation:
To solve the equation p + 20 = 27, you need to isolate the variable p. To do this, you can subtract 20 from both sides of the equation, which gives you p = 27 - 20. Simplifying this, p = 7. Therefore, the value of p is 7.