Question

if a=3 and d=-1 find the fifth term of that Ap

Answer 1

an=a+(n-1)d
an=3+(5-1)-1
an=3-4
an= -1...

Answer 2

a=3
d=-1
for 5th term

a+4d
3+4×-1
3+{-4}
=3-4
=-1
hence the 5th term is -1