Can you see the pattern?
If not look here
Cramer's rule - Wikipedia, the free encyclopedia
use cramers rule to solve each linear system
could somone show me how to do these 5 problems or if u could just show me a few it would be great i got a test tommorow and im clueless so fast help would be appreciated
x-y=7
4x+5y=46
-10x+3y=18
3x-4y=-24
9x+2y=12
5x-3y=19
2x+y=24
-x+6y=14
4x-y=1
7x+8y=-47
Can you see the pattern?
If not look here
Cramer's rule - Wikipedia, the free encyclopedia
Hello, shadower4!
I'll do the first one . . .
. .
. . . . . . . . . . . . . -coefficients . -coefficients
. . . . . . . . . . . . . . . . . . .
We have these numbers: .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . .constants
[1] Find , the determinant of the coefficients:
. .
[2] Find , the determinant with the -coefficients replaced by the constants.
. .
. .
[3] Find , the determinant with the -coefficients replaced by the constants.
. .
. .
Therefore: .