Answer:
x = 5
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Equality Properties
Geometry
- Definition of a Line: A line is 180°
Explanation:
Step 1: Set up Equation
The 2 equations must add up to 180°.
12x + 19 + 22x - 9 = 180
Step 2: Solve for x
- Combine like terms: 34x + 10 = 180
- Isolate x term: 34x = 170
- Isolate x: x = 5