Whoever gave you that equation is a nerd.
I'm going to assume that you typed it wrong and that it was supposed to be: 9x-7i > 3(3x-7u). I'm also going to assume that the variable "i" doesn't stand for the imaginary number √-1. Why am I making so many assumptions you ask?
9x-7i > 3(3x-7u)
9x-7i > 9x - 21u
-7i > -21u
i < 3u ...aka "i <3 u"
btw, Google is your friend. http://www.google.com/search?rlz=1C1GGLS...C+3(3x+7u)
I'm going to assume that you typed it wrong and that it was supposed to be: 9x-7i > 3(3x-7u). I'm also going to assume that the variable "i" doesn't stand for the imaginary number √-1. Why am I making so many assumptions you ask?
9x-7i > 3(3x-7u)
9x-7i > 9x - 21u
-7i > -21u
i < 3u ...aka "i <3 u"
btw, Google is your friend. http://www.google.com/search?rlz=1C1GGLS...C+3(3x+7u)
Robert Picard
http://www.rpicard.net
http://www.rpicard.net