himpunan penyelesaian sistem persamaan linear 2x - y = 1 dan 4x + 7y = 11

[tex]2x - y = 1 \\ 4x + 7y = 11 \\ ......................... \\ 4x - 2y = 2 \\ 4x + 7y = 11 \\ ........................ - \\ - 9y = - 9 \\ y = \frac{ - 9}{ - 9} \\ y = 1[/tex]

2x-y=1
2x-1=1
2x=1+1
2x=2
x=2:2
x=1
HP={1,1}