SOLUTION: Hello,
I am to use Cramers rule to solve the system:
x -z=4
6y-z=-19
2x+3y=1
Find the determinates:
D=
Dx=
Dy=
Dz=
I can't figure it out.
Thank you
x -z=4
6y-z=-19
2x+3y=1
Find the determinates:
D=
Dx=
Dy=
Dz=
I can't figure it out.
Thank you so much Found 2 solutions by Alan3354, ikleyn:Answer by Alan3354(69443) (Show Source):
You can put this solution on YOUR website! I am to use Cramers rule to solve the system:
x -z=4
6y-z=-19
2x+3y=1
Find the determinates [sic]:
----
|1 0 -1 4|
|0 6 -1 -19|
|2 3 0 1|
==============
Det = 1*(6*0 - 3*-1) - 0*() - 1*(0*3 - 2*6) = 3 + 12 = 15
----
Dx = 0*() + 1*(6*1 - 3*-19) + 4*(6*0 - 3*-1) = 63 + 12 = 75
----
-Dy = 1*(-1) +1*(0+38) + 4*(0+2) = -1 + 38 + 8 = 45
----
Dz = 1*(6*1 - 3*-19) - 0*() + 4*(0 - 2*6) = 63 -48 = 15
---
x = 5
y = -3
z = 1
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It's tedious and you have to be careful, but not hard.
