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

(4, 5)

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDASEquality 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

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

Step 3: Solve for y

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

C is the correct answer.