Question

find the value of Dx and Dy to solve the following simultaneous equation by crammer's method. 2x- 3y=4; 3x- y= 4​

Answer 1

Answer:

x=8/7. y=-12/21

Step-by-step explanation:

2x-3y=4. (1) equation

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

9x-3y=12. (2) equation

subtracting 1 equation by 2 equation

9x-2x+ 3x-3x=12-4

7x=8

x=8/7

putting value of x in equation (1)

2x-3y=4

2*8/7-3y=4

3y=16/7-4

3y=(16-28)/7

y=-12/21