Math, asked by abhi9795880921, 2 months ago

019) If 18,a,b,-3 are in AP,then
a+b is equal to​

Answers

Answered by AnswerBank16
0

Answer:

Let p, be the first term  i.e; 18

And, d, be the common difference,

From given series,

4th term =p+3d=−3

⟹18+3d=−3

Hence,  d=−7

So, a=p+d=18−7=11

And,  b=p+2d=18−14=4

Therefore,

a+b=11+4=15

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