Question

4. In an AP, if the common difference (d) = - 4 and the seventh term (a.) is 4, then
find the first term.​

Answer 1

Answer:

d=-4

an=a+(n-1)d

a7=7

(a+6d)=a7

(a+6(-4))=a7

then simplify it

(a+(-24))=a7

(a-24)=a7

(a-24)=4

a=4+24

a=28

if it wrong report me