Answer:
69
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Explanation:
Step 1: Define
c - 9x
c = 6
x = -7
Step 2: Evaluate
- Substitute: 6 - 9(-7)
- Multiply: 6 + 63
- Add: 69