SOLUTION: Solve each of the following linear systems by Gaussian elimination. a) 5x - 4y = -25 -3x + 2y = 11 b) 7x + 5y - 2z = 57 -6x - 2y + 9z = -190 x + 4y + 2y = -51

Algebra ->  Matrices-and-determiminant -> SOLUTION: Solve each of the following linear systems by Gaussian elimination. a) 5x - 4y = -25 -3x + 2y = 11 b) 7x + 5y - 2z = 57 -6x - 2y + 9z = -190 x + 4y + 2y = -51      Log On


   

Question 861537: Solve each of the following linear systems by Gaussian elimination.
a) 5x - 4y = -25
-3x + 2y = 11
b) 7x + 5y - 2z = 57
-6x - 2y + 9z = -190
x + 4y + 2y = -51
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
5,-4,-25
-3,2,11
determinant = -2
x = -6/-2 = 3
y = -20/-2 = 10