Question

cramer 's ruel
6x-4y=12 4x+2y = 8

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Answer 1

Answer:

x = 0 , y = -3      

Step-by-step explanation:

6x-4y=12 4x+2y = - 8

6x-4y  = 4x+2y

Coeffcient Matrix

Determinant , D = 6/4 , -4/2 = 6 *  2  +( - 4) * 8 = 12 - 24 = -12

X-Matrix  

= 12/8 , -4/2= 12 * 2 - (-4) * -8 = 24 - 24 = 0

Y-Matrix

= 6/4 , 12/2 = 6 * 2 -  12 * 4 =  12 -  48 = -36

3) Now,

   By  Cramer's Rule,

  x= 0/12 = 0  

  y = -36/12 = -3  

x = 0 , y = -3      

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