Love is you :P

Because I love mathematics, I like the way how my best friend, Rya, show her love :P She used a math puzzle like this :

Find the simplest form of  9x - 7i  > 3 (3x - 7u) !

9x - 7i     > 3 (3x - 7u)

9x - 7i  > 9x - 21u

-7i  > -21u

7i  < 21u

i < 3u

I <3 U

I ♥ U