SOLUTION: if 5x-3, x+2 and 3x-11 form an arithmetic progression, find the first term and the 21st term

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Question 618996: if 5x-3, x+2 and 3x-11 form an arithmetic progression, find the first term and the 21st term
Answer by ewatrrr(24785)   (Show Source): You can put this solution on YOUR website!
 
Hi,
5x-3, x+2 and 3x-11 form an arithmetic progression..

d = -4x + 5
-6x = -18 , x = 3, and d = -7

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