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Find the sum of the arithmetic sequence 54,48,42,36...-24
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5 votes
Find the sum of the arithmetic sequence
54,48,42,36...-24

User Sawny
by
7.7k points

1 Answer

4 votes
Answer: 210

54 + 48 + 42 + 36 + 30 + 24 + 18 + 12 + 6 + (-6) + (-12) + (-18) + (-24) =

102 + 78 + 54 + 30 + 6 - 6 - 12 - 18 - 24 =

102 + 78 + 84 - 12 - 18 - 24 =

180 + 84 - 30 - 24 =

264 - 54 = 210
User Rafy
by
8.6k points
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