Jawaban:
Baris aritmetika :
U8 => a + 7b = 13
U5 => a + 4b = 7
= 3b = 6
b = 6/3
b = 2
a + 4b = 7
a + 4(2) = 7
a + 8 = 7
a = 7 - 8
a = -1
Suku :
U20 = a + (n - 1)b
= -1 + (20 - 1)2
= 37
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Jawaban:
Baris aritmetika :
U8 => a + 7b = 13
U5 => a + 4b = 7
= 3b = 6
b = 6/3
b = 2
a + 4b = 7
a + 4(2) = 7
a + 8 = 7
a = 7 - 8
a = -1
Suku :
U20 = a + (n - 1)b
= -1 + (20 - 1)2
= 37