2x+4y=14 3x-y=7 Tolong jawab sama Caranya nya ya ,makasi;)

Bab Persamaan Linear
Matematika SMP Kelas VIII

3x - y = 7
y = 3x - 7

2x + 4y = 14
2x + 4 (3x - 7) = 14
2x + 12x - 28 = 14
14x = 14 + 28
x = 42/14
x = 3

y = 3x - 7
y = 3 . 3 - 7
y = 9 - 7
y = 2

HP = {(3, 2)}