Respuesta :

Space

Answer:

15x + 9

General Formulas and Concepts:

Algebra I

  • Combining Like Terms

Step-by-step explanation:

Step 1: Define

12x + 14 + 3x - 5

Step 2: Simplify

  1. Combine like terms (x):                    15x + 14 - 5
  2. Combine like terms (Z):                    15x + 9