SOLUTION: The 28th term of an AP is - 5.find it's common difference if it's first term is 31

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Question 1097622: The 28th term of an AP is - 5.find it's common difference if it's first term is 31

Answer by Jeetbhatt10th(11) About Me  (Show Source):
You can put this solution on YOUR website!
a28=-5=a+(n-1)d,
where a is the first term = 31 and d is the common diff.
=>-5=31+(28-1)d,
=>-5=31+27d
=>27d=-5-31
=>27d=-36
=>d=-36/27
=>d=-4/3 (answer)