Question

If nth term of an A.P is 7-4n , then its common difference is

Answer 1

Answer:

nth term= 7-4n

when n=1, a1= 7-4(1)=7-4=3

when n=2,a2=7-4(2)=7-8=-1

when n=3,a3=7-4(3)=7-12=-5

a2-a1=-1-3=-4

a3-a2=-5-(-1)=-5+1=-4

Therefore the common difference is (-4).

Please like and follow.

Do not forget to mark my answer as the branliest!!!