Question

Evaluate the question.

-8x = 90

A.) x = 82
B.) x = 45/4
C.) x = -45/4
D.) x = -82

Answer 1

C.) x = -45/4

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

Equality Properties

• Multiplication Property of Equality
• Division Property of Equality
• Addition Property of Equality
• Subtraction Property of Equality

Explanation:

Step 1: Define

Identify

-8x = 90

Step 2: Solve for x

1. [Division Property of Equality] Divide -8 on both sides: x = 90/-8
2. Simplify: x = -45/4