Question

the seventh term of ap is 4 and it's common difference is -4 what is its first term​

Answer 1

Answer:

t7=4

d=-4

According to question

a+(n-1)d=t(n)

=) a+(7-1)-4=t(7)

=)a+6(-4)=4

=)a-24=4

=)a=4+24

=)a=28

**It's first term is 28