CARA SUBTITUSI DARI 2x - 4y - 3z = 11 2x - 3y - 4z = 8 6x - 5y - 2z = 26

eliminasi,
2x - 4y - 3z = 11 persamaan 1
2x - 3y - 4z = 8 persamaan 2

-y + z = 3..... persamaan 4

eliminasi,
2x - 4y - 3z = 11. x 3 persamaan 1
6x - 5y - 2z = 26. x 1 persamaan 3

6x - 12y - 9z = 33
6x - 5y - 2z = 26

-7y - 7z. = 7 persamaan 5

eliminasi, persamaan 4 dan 5
-y + z = 3. x7
-7y -7z = 7. x1

-7y + 7z = 21
-7y - 7z = 7

14 y = 14
y = 1

subtitusi, persamaan 4
-y + z = 3
- 1 + z = 3
z. = 3+1
z = 4

subtitusi, persamaan 1
2x - 4y - 3z = 11
2x - 4.1 - 3.4 = 11
2x - 4 -12 = 11
2x -16. = 11
2x. = 11+16
2x. = 27
x. = 13,5