SOLUTION: please help me solve this equation using cramer's rule {{{5x+2y=8}}} 2x-3y=7

Algebra ->  Matrices-and-determiminant -> SOLUTION: please help me solve this equation using cramer's rule {{{5x+2y=8}}} 2x-3y=7      Log On


   



Question 246804: please help me solve this equation using cramer's rule
5x%2B2y=8
2x-3y=7

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
solve this equation using cramer's rule
5x+2y=8
2x-3y=7
---------------
5...2
2...-3
coefficient determinant: 5*-3-2*2 = -19
-----------------
8...2
7...-3
x-determinant: 8*-3-2*7 = -38
---------------------
5...8
2...7
y-determinant: 5*7-8*2 = 19
================================
x = x-det/coef det = 2
y = y-det/coef det = -1
=================================
Cheers,
Stan H.