Mathematical Equation! - Ends 30th September

http://i.imgur.com/qoDj9D4.png

Sally goes to a top-notch boarding school. She is studying GCSE maths. For revision she is doing a mathematical equation.
9x-7i > 3(3x-7u) = ….

She needs to work out the answer. Today she is asking for your help.

For this competition you need to solve the equation above and explain how you did it. Please PM your answers to HabboxComps.
The person with the correct answer or closest will win. If multiple people get it correctly, a random number generator will be used to decide the winner.

Prize: 2 Weeks VIP and 15 Rep

Just over 24 hours to enter this competition guys! :)