Answer:
(-3, 5)
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS 
- Brackets 
- Parenthesis 
- Exponents 
- Multiplication 
- Division 
- Addition 
- Subtraction 
Equality Properties 
- Multiplication Property of Equality 
- Division Property of Equality 
- Addition Property of Equality 
- Subtract Property of Equality 
Explanation:
Step 1: Define Systems
x + y = 2
y = 5
Step 2: Solve for x
- Substitute in y: x + 5 = 2
- Isolate x term: x = -3