Question

Solve using elimination 3x+3y=27 x-3y= -11

Answer 1

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