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..