Explanation About -3+(N-1)2=23

Explanation about -3+(n-1)2=23

 

Answer:

n= 14

Step-by-step explanation:

Thats from the arithmetic sequence formula:

An= A1 + (n-1) d

So if your:

An= 23

A1=-3

d= 2

n=?

An=A1+(n-1) d

23= -3+(n-1) 2

23+3= 2n-2

26 +2=2n

28=2n

2 2

14 = n