Question

if 6times the 6th term of an A.P is equal to 9times the 9th term then show that its 15th term is zero

Answer 1

hence showed
fifteenth term of AP is= 0

I hope you like it
and Mark as a brainlist answer

Answer 2

6a*6=9a*9

6(a+5d)=9(a+8d)

6a+30d=9a+72d

6a-9a=72d-30

-3a=42d

a/d=-42/3

a=-42

d=3

a*15=a+14d

=-42+42

=0.