1. Elimination Method

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..

2. Originally Posted by fluffy_penguin
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..
umm. no, there are integer solutions to x and y. show us how you got the x so that we can see where you made your mistake

3. 8x-y = 22
x + 9y=21

(9) 8x - 9y= 22

72x - 9y =

Oh I see it, I didn't multiply the 22 by 9 before I eliminated the y's. I got x =3 now.

4. Originally Posted by fluffy_penguin
8x-y = 22
x + 9y=21

(9) 8x - 9y= 22

72x - 9y =

Oh I see it, I didn't multiply the 22 by 9 before I eliminated the y's. I got x =3 now.
yes, and y is?

5. Y = 2

6. Originally Posted by fluffy_penguin
Y = 2

correct, good job