SOLUTION: find the denominator for the x variable when using cramer's rule to solve x-3y=8 and 2x+2y=8. thanks

Algebra ->  Matrices-and-determiminant -> SOLUTION: find the denominator for the x variable when using cramer's rule to solve x-3y=8 and 2x+2y=8. thanks      Log On


   

Question 109378This question is from textbook algebra2 with trigonometry
: find the denominator for the x variable when using cramer's rule to solve x-3y=8 and 2x+2y=8. thanks This question is from textbook algebra2 with trigonometry

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
find the denominator for the x variable when using cramer's rule to solve
x -3y=8
2x +2y=8
----------------
Cramer requires x = {x-determinant)/(coefficient determinant)
The coefficient determinant = 1*2-(-3)(2) = 2+6 = 8
===========
Cheers,
Stan H.