Question

what is the value of D for solving simultaneous equations x+y=3 and 3x-2y-4=0 by Cramer's rule​

Answer 1

Step-by-step explanation:

The value of D is -5

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Answer 2

Answer:

(x,y) : (2,1)

Step-by-step explanation:

x+y=3__(1)

3x-2y-4= 0,

3x-2y=0+4

3x-2y=4__(2)

multiplying eqn. (1) by 2

2x+2y=6__(3)

adding equation (2) and (3),

3x-2y=4.....(2)

+. 2x+2y=6.....(3)

___________

5x. = 10

x=5÷10

x= 2.

substituting value of x=2 in equation (1)

x+y=3

2+y=3

y=3-2

y= 1