Answer:
Solve for a:

Steps:
b = -2 + 3

Swap sides so that all variable terms are on the left-hand side.
-2 + 3
= b
Add 2 to both sides.
3
= b + 2
Divide both sides by 3.

Dividing by 3 undoes the multiplication by 3.

Solve for b:
b = 3
- 2
Hope this helps and have a Great day! =D