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➰ Kelas. = 9 SMP
➰ Bab... = Barisan dan Deret
Penyelesaian :
◇ Barisan Aritmetika
a) 4, 12, 36, 108, 324, 972, 2.916
.....×3..×3..×3...×3....×3....×3
Barisan seterusnya di kalikan dengan 3
b) 11, 6, 1, - 4, - 9, - 14
.....-5..-5..-5..-5..-5
Barisan seterusnya di kurangi dengan 5
Good Luck !
Semoga Membantu :)
- Ayraabil