Tentukan himpunan solusi dari spltv menggunakan metode eliminasi-subsitusi X+2y-3z=-4 2x-y+z=3 3x+2y+z=10

x + 2y - 3z = - 4
2x - y + z = 3
3x + 2y + z = 10

2x - y + z = 3
z = 3 - 2x + y

x + 2y - 3z = - 4
x + 2y - 3(3 - 2x + y) = - 4
x + 2y - 9 + 6x - 3y = - 4
7x - y = - 4 + 9
7x - y = 5

3x + 2y + z = 10
3x + 2y + 3 - 2x + y = 10
x + 3y = 10 - 3
x + 3y = 7

7x - y = 5|× 3
x + 3y = 7|× 1

21x - 3y = 15
x + 3y = 7
_________+
22x = 22
x = 1

7x - y = 5|× 1
x + 3y = 7|× 7

7x - y = 5
7x + 21y = 49
__________—
- 22y = - 44
y = 2

z = 3 - 2x + y
z = 3 - 2 + 2
z = 3

Maaf Kalau Salah