Question

Which of the following is a solution to the system
2x-2y=8 3x+2y=22

Answer 1

X=6 and Y=2.  These complete both equations.

Answer 2

we can eliminate y terms by adding the equations

2x-2y=8
3x+2y=22 +
5x+0y=30

5x=30
divide both sides by 5
x=6

sub back

2x-2y=8
2(6)-2y=8
12-2y=8
minus 12 both sides
-2y=-4
divide both sides by -2
y=2

x=6
y=2

the solution in (x,y) form is (6,2)