SPLDV

• Metode Campuran

1). 4x + 7y = 11 ..... pers 1

-x + 3y = 2 ...... pers 2

Eleminasi pers l dan 2

4x + 7y = 11 |×3|

-x + 3y = 2 |×7|

12x + 21y = 33

-7x + 21y = 14

-------------------- (-)

19x = 19

x = 1

Subtitusi x ke pers 1

4x + 7y = 11

4 (1) + 7y = 11

4 + 7y = 11

7y = 11 - 4

7y = 7

y = 7/7

y = 1

HP = {(1, 1)}

•••

2). 5x + 2y = 15 ..... pers 1

3x + 4y = 23 ...... pers 2

Eleminasi pers l dan 2

5x + 2y = 15 |×2|

3x + 4y = 23 |×1|

10x + 4y = 30

3x + 4y = 23

------------------- (-)

7x = 7

x = 1

Subtitusi x ke pers 1

5x + 2y = 15

5 (1) + 2y = 15

5 + 2y = 15

2y = 15 - 5

2y = 10

y = 10/2

y = 5

HP = {(1, 5)}