
Assesment SPLTV
Authored by Sakinah Hutasuhut
Mathematics
10th Grade
Used 1+ times

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5 questions
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1.
FILL IN THE BLANK QUESTION
15 mins • 10 pts
Tentukan himpunan penyelesaian sistem persamaan linear tiga variabel berikut:
2x + 5y - 3z = 3
6x +8y - 5z = 7
-3x +3y +4z = 15
Answer explanation
Eliminasikan variabel z ke pers 1 & 2
Eliminasikan variabel z ke pers 1 & 3
Eliminasikan variabel y ke pers 4 & 5
Substitusikan x ke 4
Substitusikan x & y ke 1
Jadi, himpunan penyelesaiannya adalah (x,y,z)
2.
FILL IN THE BLANK QUESTION
15 mins • 10 pts
Tentukan himpunan penyelesaian sistem persamaan berikut:
x + y + z = -6
x + y - 2z = 3
x - 2y + z = 9
Answer explanation
Menentukan persamaan x dari pers 1
Substitusi ke pers 4 & 2
Substitusi ke pers 4 & 3
Substitusi z dan y ke pers 1
Jadi, himpunan penyelesaiannya adalah (x,y,z)
3.
FILL IN THE BLANK QUESTION
15 mins • 10 pts
Diketahui
x + 3y + 2z = 16
2x + 4y - 2z = 12
x + y + 4z = 20
Tentukan nilai x,y,z
Answer explanation
Substitusi dan eliminasi
4.
FILL IN THE BLANK QUESTION
15 mins • 10 pts
Tentukan penyelesaian dari sistem persamaan
2x + 2y + 3z = 22
3x - y + 4z = 19
5x +y +2z = 21
Answer explanation
Substitusikan pers 4 ke 1
Substitusikan pers 4 ke 2
Pers 5 & 6 spldv
Substitusikan pers 7 ke 6
Substitusi nilai x ke pers 7
Substitusikan nilai x dan z ke pers 4
5.
FILL IN THE BLANK QUESTION
15 mins • 10 pts
Tentukan nilai x,y,z dari persamaan berikut:
3x + 2y - z = -3
5y - 2z = 2
5z = 20
Answer explanation
Gunakan metode substitusi untuk menentukan himpunan penyelesaian dari persamaan tersebut.
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