Respuesta :

Space

Answer:

3x + y = 7

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

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.

  1. [Addition Property of Equality] Add 3x on both sides:                                 3x + y = -3x + 7 + 3x
  2. [Simplify] Combine like terms:                                                                       3x + y = 7

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