Solving a one step equations using subtraction

The video tutorial explains how to solve the equation 4 = P + 13 by using inverse operations. It begins by identifying the variable on the right side and discusses how to switch it using operations. The tutorial then focuses on applying the inverse operation of subtraction to both sides of the equation, ensuring the subtraction property of equality is maintained. The solution is rewritten with the variable first, emphasizing the standard format of equations. The tutorial concludes with a summary of the steps taken to solve the equation.

Why is it preferred to write the answer with the variable first?

What is the final value of the variable P after solving the equation?