Question

If an=5n-3 find the common difference​

Answer 1

Hi here is your answer

an=5n-3

an-1= -3+5n

an-1= -3+5(n-1)

an-1= -3+5n-5

an-1= 5n-7

d= an- an-1

d=(5n-3)-(5n-7)

d=5n-3-5n+7

d=4

Answer: d = 4

Hope this helps you.

Answer 2

d = 5

Explanation:

an = 5n -3

a1 = 5 -3 = 2

a2 = 5*2 -3 = 10 - 3 = 7

d = a2 - a1 = 7 - 2 = 5