SOLUTION: if the 6th term of an A.P is 35 and the 13th term is 27, calcuate the 20th term

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Question 1204267: if the 6th term of an A.P is 35 and the 13th term is 27, calcuate the 20th term
Answer by greenestamps(13200) About Me  (Show Source):
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The 13th term is 7 terms after the 6th term; the difference between the 6th and 13th terms is -8.

The 20th term is also 7 terms after the 13th term, so the difference between the 13th and 20th terms is the same as the difference between the 6th and 13th terms: 27 + (-8) = 19

ANSWER: 19