Question

In an A.P. given a = 7, 13th term is 35 find d​

Answer 1

Answer:

a=7,n=13,an=35

an=a+(n-1)d

35=7+(13-1)d

35-7=12d

28=12d

28/12=d

7/3=d

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Answer 2

Answer:

7/3

Step-by-step explanation:

a=7

a13=35

a+12d=35

7+12d=35

12d=28

d=28/12=7/3

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