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Dit: 10 suku pertama
Jwb:
Rumus:
= 35
a + (6 - 1).b = 35
a + 5b = 35
= 62
a + (2 - 1).b + a + (8 - 1).b = 62
2a + 8b = 62
Eliminasi
a + 5b = 35 | x2
2a + 8b = 62 | x1
2a + 10b = 70
2a + 8b = 62 _
2b = 8
b = 4
a + 5b = 35
a = 35 - 5b
= 35 - 5.(4)
= 15
= a = 15
b = 4
10 suku pertamanya adalah
15, 19, 23, 27, 31, 35, 39, 43, 47, 51, ...