Math, asked by neetusanjaypatil, 1 year ago

What is the common difference of an A.P in which a21-a7=84 .

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Answers

Answered by rishi5761

5

Hope it may help you...

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Answered by fgbj

2

a 21-a7=84
a+20d-(a+6d)=84
a+20d-a-6d=84
14d=84
d=84/14
d=6
So the common difference =6
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