Carilah penyelesaian sistem persamaan Berikut X+2y = 8 2x-y=6

Bab Persamaan Linear
Matematika SMP Kelas VIII

2x - y = 6
y = 2x - 6

x + 2y = 8
x + 2 . (2x - 6) = 8
x + 4x - 12 = 8
5x = 8 + 12
x = 20/5
x = 4

y = 2x - 6
y = 2 . 4 - 6
y = 8 - 6
y = 2

HP = { (4, 2) }