Hi, I was wondering if someone could work through this problem for me while showing all the steps. I've been having some trouble with getting them right, i get them ok when they're linear/numerical, however these pro-numerals are putting me off

Code:

x + ay/b = ab
bx - ay = 0

That's the question. So far this is how far I've gotten, however now I'm stumped

Code:

bx = b/ay
Therefore: x = 1/ay
sub the x value into the question's first equation:
1/ay + ay/b = ab
b + (ay)^2 = ab * ayb
b + a^2 * y^2 = a^2 * b^2 * y

Now I'm stumped as how to simplify further.

Also, sorry about not using LaTeX. I was stumped on how to add a line break on the first part. The tutorial says to use \\ to make it go down a line, however it didn't seem to work for me it just removed the space on two lines... what I did was:

Code:

x + \frac{ay}{b} = ab \\
bx - ay = 0

Any help with that as well would be greatly appreciated!

Thanks

EDIT: and if it helps. The answer your supposed to get is: x = ab/2 and y = b^2/2