Question

solve it please I need it fast​

Answer 1

Answer:

common difference, d =1/a

Step-by-step explanation:

common difference, d=t2-t1(term 1 - term 2)

=(7a+6/7a)-(7a-1/7a)

=(7a+6)-(7a-1)/7a

=7a+6-7a+1/7a

=6+1/7a(+7a and -7a are cancelled)

=7/7a

=1/a