Question

find the nth term.......​

Answer 1

Answer:

Step-by-step explanation:

a=a-3b

d=a-b-a+3b

=3b-b

=2b

To find the nth term

an = a+(n-1)d

=(a-3b)+(n-1)2b

=a+3b+2bn-2b

=a+b+2bn