Tolong dong jawaban nomor 2 nya ya Thx bangett

x + y + z = -3
x + y = -3 - z ... (1)

2(x + y) - z = 6
x + y = (6 + z)/2 ... (2)

x + y = x + y
-3 - z = (6 + z)/2
kali silang
-6 - 2z = 6 + z
-3z = 12
z = -4

x + y = -3 - z
x + y = -3 - (-4)
x + y = 1

x - y = 7
x + y = 1
Jumlahkan
2x = 8
x = 4

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

▶
(x , y , z) = (4 , -3 , -4)

Opsi : C