# no ngasal
# no ngambil poin
# no bahasa alien
Jawab:
perbandingan
15) sisi pendek = 9/4 x 3 = 6,75 cm
16) 6a + b = 6(3) + 4 = 22
4a + 5b = 4(3) + 5(4)= 32
22 : 32 = 11 ; 16
17. drama = 7/12 x 72 = 42
misteri = 5/12 x 72 = 30
banyak buku misteri = 42 - 30 = 12
18.
a + b = 1
a - b = 5__(+)
2a = 6
a= 3
a + b = 1
3 + b = 1
b = -2
a² - b² : a² + b² =
(9- 4) ; (9 + 4)
= 5 : 13
19. skala 2 cm : 80 km
= 2 : 8.000.000
= 1 : 4.000.000
20. p= 7 x 21 / 49
p = 21/7
p = 3
Jawaban:
9/4 × 3
(9 ÷ 4) × 3
6,75cm
6(3) + 4 = 22
4(3) + 5(4) = 32
22 : 32 = 11:16
7/12 × 72
(7 ÷ 12) × 72
42
5/2 × 72 = (5 ÷ 2) × 72 = 30
42 - 30 = 12
2a = 6
a = 6/2
a = 3
3 + b = - 1
b = - 2
(9 - 4) : (9 + 4)
5:13
2 : 80
2 : 8.000.000
2 ÷ 2 : 8.000.000 ÷ 2
1 : 4.000.000
7 × 21/9
21 ÷ 7
3