Question

nth term to 12 10 8 6 4

Answer 1

$a_n=a_1+(n-1)d\\\\ d=-2\\ a_1=12\\\\ a_n=12+(n-1)\cdot(-2)\\a_n=12-2n+2\\ \boxed{a_n=-2n+14}$

Answer 2

$a_{n}  $ = a₁ + d(n - 1)  ; a₁ is the first term and d is the difference

  = 12  -2(n - 1)

  = 12  -2n +2

   = 14  -2n

Answer: 14 - 2n