Question

In an ap if the common difference is
4 and 7th term is 4 then find the first term

Answer 1

if a+6d=4
then
a+6(4)=4
a+24=4
a=-20

Answer 2

d=4

a7=4

a+6d=4

a+6×4=4

a+24=4

a=4-24

a=-20

the first term is -20

hope this answer will help you.