Math Is Fun Forum

Yes (When it's possible in terms of the parameters). This is obvios, because B,C,D are unknowns.
But sometimes one of the unknowns may have more of one values, and then the other unknowns will be expressed in terms of it.
For example, if you have the equation:
x=y, then x can be every number, but y MUST BE EQUAL to x (not any)
And in this system you can't have division by 0.
I'm talking about something like:

0=0+const;
0-const=10;

Get it now?

We can call them "Passerby" numbers...

IT CAN BE SOLVED!
in sertain cases it may not have a solution, but the absence of solution is a solution...
if you understand...

I'll try bigger.
I've written a nice program in Mathematica, but it's incredibly... slow .
I'll try with C program.

There are infinite number of numbers that can be made witn 4 4s.
Prove this!
And it's easy to handle all the negatihe numbers to -100, if you use the fact:
-(a)=-a!!!
Now devz, do you understand why people search only positive solutions?

Devante (sorry but I can't put ' over yours e) is right.
The best way to understand and learn something is to...
ASK!

I knew it!

I'm from Bulgaria.
my jelly beans!!!

For this you will need a definition of module over the reals.
For example:

I agree. And I'm not familiar with all of them too. We can't know everything. That's why there're  google, wikipedia and wolfram's mathworld and many other !

Good

I don't know...
There is a telling in our country -
Free lunch doesn't exist. (in Bulgarian it sounds better )

I don't agree. If you have some very big messy program, for example, and if it uses many modulus in it, and if it doesn't do what it's supposed to do, then you should know what's happening around the %, because the mistake may be there. If you don't know, you might pass the error, without noticyng it and this can cost you a big headache.