ok these are the equations...
8k - 5n = 8r
3u + 2o = 189
5d + 2c = 6m
5L + 4m = 23b
3r - m = 3u
3k - 4i = 2i
3n - 3o = c
o - c = 4d
8i + 9r = 9n
10m + 7d = 3n
4d + 4e = 6b
4y - 6u = 2m
6b + 3c = 14m

now i need to find out what each variable really is...any help?

2. Are you familiar with Matrices and RREF? You can use Matrices to simplify this process a lot.

3. ## what?

no i havent what are those?

4. Alright. Well first of all, if your teacher won't let you use any method possible than this is pointless. If you can, this involves making a Matrix that has N rows, where N is the number of variables and N+1 columns. Do you have a calculator that can perform Matrix operations?

5. ## problem

uh no i do not. o and this is not for school so i havent exactly learned it yet.

6. Alright, well this is going to require a ridiculous amount of substitution then. Find a way to substitute two of the three variables into one, solve and repeat. It'll take a while, but you can do it.

7. ## meaning?

what exactly does that mean?

8. That means, for example, you have:
$x+3y=2$
$2x+4y=1$
Then solve for the first equation:
$x=2-3y$
Thus substitute that into 2nd equation:
$2(2-3y)+4y=1$
Now solve for $y$
One you have $y$ you can solve for $x$.

9. Originally Posted by jackiekka
ok these are the equations...
8k - 5n = 8r
3u + 2o = 189
5d + 2c = 6m
5L + 4m = 23b
3r - m = 3u
3k - 4i = 2i
3n - 3o = c
o - c = 4d
8i + 9r = 9n
10m + 7d = 3n
4d + 4e = 6b
4y - 6u = 2m
6b + 3c = 14m

now i need to find out what each variable really is...any help?