Tolong bantu kakak2 .. Kok blm bisa di pahamii

y = 4x - 11 => 4x - y = 11....(1)
2x + y = 1.....(2)
eliminasi x, maka (2)× 2
4x + 2y = 2
4x - y = 11
-------------- -
3y = -9
y = -9/3
y = -3