Tentukan hp dari SPLDV 1) x-y=4 , x+3y=16 2) x-y=-5 , x-2y=20

1)
x - y = 4
x + 3y = 16
________ _
-4y = -12
y = -12 / -4
y = 3

x - y = 4
x - 3 = 4
x = 4 + 3
x = 7

HP = {(7, 3)}

2)
x - y = -5
x - 2y = 20
________ _
y = -25

x - y = -5
x - (-25) = -5
x + 25 = -5
x = -5 - 25
x = -30

HP ={(-25, -30)}

Semoga membantu :)