Question

a=13,n=15,an=55,find d=?​

Answer 1

Answer:

3

Step-by-step explanation:

a15=a+(n-1)d

55=13+14d

55-13=14d

42=14d

42/14=d

3=d

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Answer 2

Answer:

d=3

Step-by-step explanation:

Given, a=13 , n=15 an=55 , d=?

an= a+(n-1)d

55=13+(15-1)*d

55-13=14*d

42=14*d

d=42/14

d=3

Hope it helps u!!