You will divide eveything by 6
you will end up with
Answer:

Step-by-step explanation:
we know that
A relationship between two variables, x, and y, represent an inverse variation if it can be expressed in the form
or 
In this problem

step 1
Find the value of K
For 
substitute


the equation is 
step 2
For 
substitute in the equation


Answer:
30 1/10
Step by step explanation:
71/2-5 2/5= 30 1/10
30 1/10 divided by a (also know as 1) = 30 1/10
D means common difference which is the last term minus second last term .
and u can use this formula only if there is a common difference.