Question

5p-9=2p+12 Please help!!!

Answer 1

5p-9=2p+12
   +9       +9
 5p= 2p+21
-2p -2p
3p/3=21/3
p=7

Answer 2

First we have to collect the like terms (The terms with the same variables) on the same side so it becomes:
5p-2p=12+9
Then you simplify it by combining the like terms so it becomes:
3p=21
Now you simplify by dividing both sides by 3 and it becomes:
p=7

Hope this helps :)