Question

Evaluate the expression 2x - (4y - 3) + 5xz, when x = -3, y = 2, and z = -1.

Answer 1

4

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

Identify

2x - (4y - 3) + 5xz

x = -3

y = 2

z = -1

Step 2: Evaluate

1. Substitute in variables: 2(-3) - (4(2) - 3) + 5(-3)(-1)
2. (Parenthesis) Multiply: 2(-3) - (8 - 3) + 5(-3)(-1)
3. (Parenthesis) Subtract: 2(-3) - 5 + 5(-3)(-1)
4. Multiply: -6 - 5 + 15
5. Subtract: -11 + 15
6. Add: 4