Solve by elimination

Question

5x+y=2
3x+y=1

This is what I got :
3(5x+y=2)
-5(3x+y=1)
15x+3y=6
-15x-5y=-5

-2y=1
2 2
Y=1/2

15x+3(1/2)=6
15x+3/2 =6
15x/15= 9/2 /15
X=3/10

Answer 1

If -2y = 1, then y = -1/2

Thus 3x + (-1/2) = 1, then:

3x = 3/2

x = 1/2