Question

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Solve the system of equations
33 -y=6
63 +y = 21

Answer 1

y=27;y=−42

Explanation:

33−y=6;63+y=21

y=27;y=−42

I hope this helps!

Answer 2

(3,3)

x=3 and y=3

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)