Math, asked by priya8582, 1 year ago

plz help me....... guys..

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Answered by monubarawal2002

2

it's the answer to your question....

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Answered by Anonymous

8

$hello$

Given:

a5= -11

a12=-25

We know that,

a5=a+4d

a12=a+11d

Hence, a+4d=-11-----(1)

=>a+11d=-25-----(2)

On subtracting (1) from (2), we get 7d=-14

Therefore, d=-2

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