February 2023 1 14 Report
dik jumlah deret aritmatika:
2+8+14+20+........=7.450
tentukan banyak suku dalam deret aritmatika itu!

clue rumus:
[tex]sn = \frac{n}{2} (2a + (n - 1)b \: \: \: \ \: )[/tex]
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kukira kenangan itu 100% indah, ternyata hanya rasa kangen dan juga penyesalan. ​

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