Assuming you are trying to find the value of p:
You would add 1 to each side to make the p alone
-2 =p - 1
+1 +1
-1 = p
To check, you can put p in the original equation
-2 = -1 - 1
-2 = -2 which means this is correct
Hope this helps! If you can, please give brainlist! :)
