I don't understand how to do this using reciprocals, how my teacher wants me to solve the problem.
Note: The fraction bar is in my paper, so it's 144 being the numerator, k being the denominator, and then =9 if that makes any sense.
Multiply both sides of the equation by k.
144 = 9k
16 = k
thank you so much!posted by Nicki
You're very welcome.