Math, asked by vanshmodi20, 1 year ago

if the sum of first 6 terms of an ap is 9 and the sum of its first 9 terms is 6 then find the sum of first 15 terms

Answers

Answered by rohithbojja03

8

-15 is the answer by using the formula sn=n/2(2a+(n-1)d)
and solving the equations using elimination method

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Answered by deenakhatri1974

6

Answer:

Step-by-step explanation:

Hope it helps!!!!!

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