Diketahui:
Ut = 12
Sn = 84
Ditanya: n?
Jawab:
Sn = ½n (2a+(n-1)b)
Sn = ½n (a+Un)
Sn = n × Ut
84 = n × 12
n = 84/12
n = 7
jawabannya 7
semoga membantu
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Diketahui:
Ut = 12
Sn = 84
Ditanya: n?
Jawab:
Sn = ½n (2a+(n-1)b)
Sn = ½n (a+Un)
Sn = n × Ut
84 = n × 12
n = 84/12
n = 7
jawabannya 7
semoga membantu