U3=24
U6=36
1. U15-U10=...
2. S20=...
Tolong dijawab kak![]()
U6=36
1. U15-U10=...
2. S20=...
Tolong dijawab kak
Jawab:
U6 = a + 5b
U3 = a + 2b
<=> 36 = a + 5b
24 = a + 2b
<=> 12 = 3b
b = 12/3
b = 4
24 = a + 2b
24 = a + 2(4)
24 = a + 8
24/8 = a
a = 3
Nomor 1:
U15 = a + 14b
U15 = 3 + 14(4)
U15 = 3 + 56
U15 = 59
U10 = a + 9b
U10 = 3 + 9(4)
U10 = 3 + 36
U10 = 39
U15 - U10
= 59 - 39
= 20
Jawaban akhir: 20
Nomor 2:
U20 = a + 19b
U20 = 3 + 19(4)
U20 = 3 + 76
U20 = 79
S20 = 20/2 (a + U20)
S20 = 10(3 + 79)
S20 = 10 x 82
S20 = 820
Jawaban akhir: 820
[answer.2.content]
