Kunci jawaban Soal Halaman 30, 31, 32 Matematika Kelas 9 SMP/MTs Kurikulum Merdeka: Soal 1-10

b. (-5)5: (-5)2 x (-5)2
= (-5)5-2+2 = 1
= (-5)1
= -5

c. 12 + (47/46)
= 12 + 47-6 = 1
= 12 + 4
= 16

d. ((3 x 54)/53) – 15
= 3 x 5 – 15
= 15 - 15
= 0

e. (45 : 44) – (24 : 23) x 6
= 4 – 24/23 x 6
= 4 – 2 x 6
= -8

(Soal 4)

a. 1/2-5, 1/2-2 . 2-3, 1/(32)-1

b. 1/p^-3, 1/(p x p x p)-1, 1/p-2 . p-1

(Soal 5)

a. s11/s7 = sn
s^4 = sn
4 = n
n = 4

b. 3^4 = n x 9
81 = n x 9
n = 81/9
n = 9

(Soal 6)

a. 5m/5n = 54
5m-n = 54
m-n = 4
Jika m = 9, 9 – n = 4
n = 5
(m,n) = (9,5)
Jika m = 8, 8 - n = 4
n = 4
(m,n) = (8,4)
Jika m = 7, 7 – n = 4
n = 3
(m,n) = (7,3)
Jika m = 6, 6 – n = 4
n = 2
(m,n) = (6,2)
Jika m = 5. 5 – n = 4
n = 1
(m,n) = (5,1)

b. Banyak himpunan penyelesaian ada 5

(Soal 7)

2y = 22015 + 22014 + 22013/14
2y =22013 (22 + 2 + 1)/14
2y = 22013 x 7/14
2y = 22013/2
2y = 22012
y = 2012