a-a
_
a - a
_
b
not sure if that makes sense like that but im not entirely sure how to write it, basically a take away a over a take away a over b, simplified.
Would I be right to make the last part
a a
_-_
1 b
so it turns into 1-b because the top parts cancel each other out, so I'm left with a-a
_
1-b?
Or is that completely on the wrong track?