Hey!
The best way to solve this problem would be to start by rearranging it. We can rearrange it so that 15 is subtracted by eight.
Original Equation :
x + 15 = 8
New Equation {Changed by Rearranging} :
15 - 8 = x
Now, all we have to do is solve to get our answer.
15 - 8 = 7
So, in the equation of x + 15 = 8, x = 7.
Hope this helps!
- Lindsey Frazier ♥