Simple algebra help debate between mother and son?

[Tara C]

My son and i have a debate , can someone with math knowledge please solve this :


Evaluate:

1/4 (12-8) + 3 (15 divided by 5-2)

Name the property used in each step

1.
2.
3.
4.
5.
6.


Any help here will get 10 points. Thank u.