I keep getting high fractions, I'm no good with fractions.
http://img295.imageshack.us/img295/1999/p2el3.jpg
I get: x= 43/73
Then plugging 43.73 in for x I get
43/73 + 9y= 21
Multiply everything by 73
43+ 657 y = 1533
657 y = 1490
y =
I don't know, just seems like such an odd number to be in a book..