Respuesta :

Space

Answer:

(4, 5)

General Formulas and Concepts:

Pre-Algebra

  • Order of Operations: BPEMDAS
  • Equality Property

Algebra I

  • Solving systems of equations using substitution/elimination

Step-by-step explanation:

Step 1: Define systems

3x + 3y = 27

x - 3y = -11

Step 2: Solve for x

  1. Eliminate y (add equations):                    4x = 16
  2. Divide 4 on both sides:                            x = 4

Step 3: Solve for y

  1. Define original equation:                    x - 3y = -11
  2. Substitute in x:                                     4 - 3y = -11
  3. Subtract 4 on both sides:                   -3y = -15
  4. Divide -3 on both sides:                     y = 5

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