Final answer:
To make x the subject of the formula p + x = t, subtract p from both sides of the equation: x = t - p.
Step-by-step explanation:
In order to make x the subject of the formula p + x = t, we need to isolate x on one side of the equation. To do this, we can subtract p from both sides of the equation:
x = t - p
Now, x is the subject of the formula.