5p-9=2p-12 solve for p

Get like numbers together so get the p with the p and the extra numbers together and if they changes sides change their signs so if it was positive and you switched sides it would then become negative so:

5p-9=2p-12

5p-2p=-12+9

Then continue the problem and add or subtract depending on the signs.

5p-2p=-12+9

3p=-3

Then get the p only. To do that you need to divide by 3 since you are multiplying it on its starting side.

3p=-3

p=-3/3

p=-1

So you get a final answer of p=-1

5p-9=2p-12

5p-2p=-12+9

3p=-3

p=1