Question

If the nth term of an ap is 7-4n find its common difference

Answer 1

Answer:

Step-by-step explanation:

Let n=1

A1=7-4*1

A1=7-4

A1=3

Let n=2

A2=7-4*2

A2= -1

A2-A1= Cd

-1-3=-4

(-4) common difference