
BAB 3 - Soal Aljabar Kelas 7
Quiz
•
Mathematics
•
7th Grade
•
Practice Problem
•
Hard
Resi Handayani
FREE Resource
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16 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
45 sec • 5 pts
Hasil dari (3x+5)+(2x−3) adalah:
5x+2
5x−8
x+8
6x + 3
Answer explanation
Untuk menyelesaikan (3x+5)+(2x−3), kita jumlahkan koefisien x dan konstanta: 3x + 2x = 5x dan 5 - 3 = 2. Jadi, hasilnya adalah 5x + 2.
2.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Hasil dari (4a - 7) - (2a + 3) adalah:
6a - 10
2a - 10
2a - 4
6a - 4
Answer explanation
Untuk menyelesaikan (4a - 7) - (2a + 3), kita distribusikan tanda minus: 4a - 7 - 2a - 3. Kemudian, kita gabungkan suku sejenis: (4a - 2a) + (-7 - 3) = 2a - 10. Jadi, jawaban yang benar adalah 2a - 10.
3.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Jika p = 2x + 5 dan q = 3x - 2, maka p + q adalah:
5x + 3
6x + 3
6x - 7
5x - 7
Answer explanation
Untuk menghitung p + q, kita jumlahkan kedua persamaan: p + q = (2x + 5) + (3x - 2) = 5x + 3. Jadi, jawaban yang benar adalah 5x + 3.
4.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Sederhanakan: (5m + 3n) - (2m - n).
3m + 4n
3m + 2n
7m - 2n
7m + 4n
Answer explanation
Untuk menyederhanakan (5m + 3n) - (2m - n), kita distribusikan tanda minus: 5m + 3n - 2m + n. Kemudian, kita gabungkan suku sejenis: (5m - 2m) + (3n + n) = 3m + 4n. Jadi, jawaban yang benar adalah 3m + 4n.
5.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Jika x = 2y - 5, maka hasil dari 2x + y adalah:
4y - 9
3y - 10
4y - 10
3y - 9
Answer explanation
Dari x = 2y - 5, substitusi ke dalam 2x + y: 2(2y - 5) + y = 4y - 10 + y = 4y - 9. Jadi, hasilnya adalah 4y - 9.
6.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Hasil dari (2x)(3x) adalah:
6x^2
5x^2
6x
6x^3
Answer explanation
Untuk menghitung (2x)(3x), kalikan koefisien 2 dan 3 untuk mendapatkan 6, dan tambahkan eksponen x, yaitu x^1 + x^1 = x^2. Jadi, hasilnya adalah 6x^2.
7.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Hasil dari (4a)(-3b) adalah:
-12ab
12ab
-7ab
-12a^2b
Answer explanation
Untuk menghitung (4a)(-3b), kalikan koefisiennya: 4 * -3 = -12. Kemudian, gabungkan variabelnya a dan b, sehingga hasilnya adalah -12ab. Pilihan yang benar adalah -12ab.
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