HP dari SPLTV { 3x+2y-6z=12 5x-4y+2z=0 6x+z=26

3x + 2y - 6z = 12 |×2
5x - 4y + 2z = 0
maka
6x + 4y - 12z = 24
5x - 4y + 2z = 0
--------------------------(+)
11x - 10z = 24

6x + z = 26 |×10
11x - 10z = 24
maka
60x + 10z = 260
11x - 10z = 24
------------------------(+)
71x = 284
x = 4

6x + z = 26
6(4) + z = 26
24 + z = 26
z = 26 - 24
z = 2

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

hp = { 4,6,2 }

3x + 2y - 6z = 12 dikalli 2
5x - 4y +2z = 0 dikali 1

6x + 4y - 12z = 24
5x - 4y +2z = 0
_____________+
11x - 10z = 24

6x+ z = 26 dikali 10
11x - 10z = 24 dikali 1

60x + 10z = 260
11x - 10z = 24
____________+
71x = 284
x = 4

6x + z = 26
6(4) +z = 26
24 +z = 26
z = 26-24
z = 2

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

(x,y dan z = 4,6 dan 2)





x+7 + 2x +4 >= 5

3x + 11 >= 5
3x >= 5-11
3x >= 6
x >= 2

Itu lebih besar sama dengan yah...