SOLUTION: Which of the following represents a way to solve the system for x using Cramer's rule? 2x – y = 4 –5x + 3y = 3

Algebra ->  Matrices-and-determiminant -> SOLUTION: Which of the following represents a way to solve the system for x using Cramer's rule? 2x – y = 4 –5x + 3y = 3      Log On


   

Question 647382: Which of the following represents a way to solve the system for x using Cramer's rule?
2x – y = 4
–5x + 3y = 3
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

Cramer's rule:

 2x – y = 4

–5x + 3y = 3

 x = Dx/D = 15/1 = 15  and y = Dy/D =  26/1 = 26

Note: M+=matrix%282%2C2%2C+a%5B1%5D%2Cb%5B1%5D%2Ca%5B2%5D%2Cb%5B2%5D%29  =+a%5B1%5D%2Ab%5B2%5D+-++b%5B1%5D%2Aa%5B2%5D

D+=matrix%282%2C2%2C2%2C-1%2C-5%2C3%29 = 1

Dx+=matrix%282%2C2%2C4%2C-1%2C3%2C3%29 = 15

Dy+=matrix%282%2C2%2C2%2C4%2C-5%2C3%29 = 26