Answer:

Step-by-step explanation:
Hi there! I'm glad I was able to help you!
There's only one step to solving for the variable, but first, I'd like to flip the equation over so that it's easier to solve.

Now we're ready to solve.
Our first (and only) step: Add 5 to both sides of the equation.

The top part cancels itself out, since negative 5 plus a positive 5 gives us zero, nothing.
Now, we are left with 15 + 5, which leaves us with:

I hope this helped you! Leave a comment below if I could help you with anything else! :)