Barisan aritmetika
[tex]b = \frac{65 - 41}{9 - 5} = \frac{24}{4} = 6 \\ \\ u5 = a + 4b \\ 41 = a + 4(6) \\ 41 = a + 24 \\ 41 - 24 = a \\ a = 17[/tex]
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Barisan aritmetika
[tex]b = \frac{65 - 41}{9 - 5} = \frac{24}{4} = 6 \\ \\ u5 = a + 4b \\ 41 = a + 4(6) \\ 41 = a + 24 \\ 41 - 24 = a \\ a = 17[/tex]