Answer:
x = q - 3
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS 
- Brackets 
- Parenthesis 
- Exponents 
- Multiplication 
- Division 
- Addition 
- Subtraction 
Equality Properties
Explanation:
Step 1: Define Equation
x + 3 = q
Step 2: Solve for x
- Subtract 3 on both sides: x = q - 3