Question

-90 + x = 180
What is the answer ?

Answer 1

x = 270

Explanation:

- 90 + x = 180

Add 90 to each side of the equation.

- 90 + 90 + x = 180 + 90

Combine like terms.

x = 270

Answer 2

x = 270

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

-90 + x = 180

Step 2: Solve for x

1. [Addition Property of Equality] Add 90 on both sides: x = 270