I am figuring out how to create the equation

Question

The electric field, , around a charge  a distance  away is given by 

Solve the formula algebraically for   

Answer 1

To solve for q, you would divide both sides of the equation by everything on the right side except for q. This will give:

q = E/(kr2)

Answer 2

All you have to do is isolate q on one side by dividing by the other terms.

This would leave you with q = E/(kr^2)