Jawab:
Penjelasan dengan langkah-langkah:
U5 = a + (5 - 1)b
10 = a + 4b
a = 10 - 4b
U8 = a + (8 - 1)b
22 = a + 7b
22 = 10 - 4b + 7b
22 = 10 + 3b
22 - 10 = 3b
12 = 3b
b = 12/3 = 4
a = 10 - 4(4) = 10 - 16 = -6
U21 = a + 20b = -6 + 20(4)
= -6 + 80 = 74
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Jawab:
Penjelasan dengan langkah-langkah:
U5 = a + (5 - 1)b
10 = a + 4b
a = 10 - 4b
U8 = a + (8 - 1)b
22 = a + 7b
22 = 10 - 4b + 7b
22 = 10 + 3b
22 - 10 = 3b
12 = 3b
b = 12/3 = 4
a = 10 - 4(4) = 10 - 16 = -6
U21 = a + 20b = -6 + 20(4)
= -6 + 80 = 74