simplification

[Good Dreams]

Is there any way of simplify this?

(a*d - b*c) / (d - c)

[Guv]

No.

[HarryW]

I had a look at this yesterday and thought not, but I wasn't certain so I thought I'd keep quiet. Is there a reason you want to make it simpler, or do you just need it in its simplest form?

[Good Dreams]

It's better to tell what is this for.

Given two lines:

y = cx + a and y = dx + b

I saw that:

x = - (b - a) / (d - c)
and
y = (a*d - b*c) / (d - c)

As these formulas are the basis of other formulas, it would help me a lot if there was a simplification of the second one.
I supose the two last formulas are correct...

[Guv]

Goodreams: Your equations for x & y are correct.

I prefer x = (a - b) / (d - c) or x = (b - a) / (c - d), but youir equation is correct as it stands.