How To Solve Find The 20th Term Of The Arithmetic Sequence 17,13,9

How to solve find the 20th term of the arithmetic Sequence 17,13,9

Answer:

9=17+(20-1)d

9=17+19d

17-9=19d

8 = 19d

19 19d (cancel 19)

0.42=d

Am i correct?


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