Question

5. In an AP, if d = -4, n = 7 and an = 4, then first term (a) is equal to​

Answer 1

Answer:

28

Step-by-step explanation:

given:- d=-4

n= 7

an = 4

To find :- a

solution :- an = a+(n-1) d

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

4= a+6 (-4)

4= a-24

a=28