Note: enter your answer and show all the steps that you use to solve this problem in the space provided.
solve the system of equations
33 -y=6
63 +y = 21

(3,3)

x=3 and y=3

Step-by-step explanation:

The system of equations are:-

3x - y = 6

6x + y = 21

Elimination method: To eliminate one variable by add/sub both equation and solve for another variable.

3x - y = 6

6x + y = 21

Add both equation and eliminate y

3x + 6x = 6 + 21

       9x = 27

          x = 3

Put x=3 into 6x + y = 21

6(3) + y = 21

18 + y = 21

      y = 21 - 18

      y = 3

Hence, The solution of the system of equations is (3,3)

c is the correct answer

step-by-step explanation: