lern2algebra
7p = 91
You need to find p
so, divide both sides by 7.
7p/7 = 91/7
The 7s on the left side cancel because 7/7 = 1, leaving only p. 91/7 = 13.
So, p = 13.
25m = 25
It's 1. I won't explain how to do this one.
15/0 is not good.
You want 0/15, which is 0.
Algebra is the easiest thing in the world once you get the hang of it but it is scary as hell when you start. Just keep trying.