Question

Evaluate if 8y + 4x – (2x + 3) if x = – 2 and y = 6

Answer 1

41

Explanation:

substitute x=-2 and y=6, we know

8×6 +4×(-2) -(2×(-2) +3) = 48-8-(-1) =41

Answer 2

41

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

8y + 4x - (2x + 3)

x = -2

y = 6

Step 2: Evaluate

1. Substitute in variables: 8(6) + 4(-2) - (2 · -2 + 3)
2. (Parenthesis) Multiply: 48 - 8 - (-4 + 3)
3. (Parenthesis) Add: 48 - 8 - (-1)
4. Subtract: 41