Question

Evaluate the expression 3a/b - b/a for a=-1 and b=4.

Answer 1

-1/2

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

1. Brackets
2. Parenthesis
3. Exponents
4. Multiplication
5. Division
6. Addition
7. Subtraction

• Left to Right

Explanation:

Step 1: Define

3a/b - b/a

a = -1, b = 4

Step 2: Evaluate

1. Substitute in variables: 3(-1)/(4) - (-1)/4
2. Multiply: -3/4 - (-1)/4
3. Simplify: -3/4 + 1/4
4. Add: -2/4
5. Simplify: -1/2