Question

a=..., d=_3, n=18,an=-5​

Answer 1

Answer:

use this formula and put the values

an=a+(n-1)d

Answer 2

an= a+(n-1)d

-5=a+(18-1)3

-5=a+(17)3

-5=a+51

-5-51=a

-56=a

Ans ☺️