Answer:
3x + y = 7
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Equality Properties
- Multiplication Property of Equality
- Division Property of Equality
- Addition Property of Equality
- Subtraction Property of Equality
Algebra I
Standard Form: Ax + By = C
- A, B, and C are integers
- A cannot be negative
- B must be non-zero
Step-by-step explanation:
Step 1: Define
y = -3x + 7
Step 2: Rewrite
Find Standard Form.
- [Addition Property of Equality] Add 3x on both sides: 3x + y = -3x + 7 + 3x
- [Simplify] Combine like terms: 3x + y = 7