Tolong kk yg bisa jawab nonor 1 pakai cara juga kk. Biar saya paham

4x + y = 1
x = 1 - 4x

-6x -2y = -3
-6x - 2(1-4x) = -3
-6x -2 + 8x = -3
2x - 2 = -3
2x = -1
x = -1/2

4x + y = 1
4(-1/2) + y = 1
-2 + y =1
y = 3

jadi x = -1/2 dan y = 3