Answer:
2.5
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Explanation:
Step 1: Define
ab - 0.5b
a = 1
b = 5
Step 2: Evaluate
- Substitute: 1(5) - 0.5(5)
- Multiply: 5 - 2.5
- Subtract: 2.5