Question

Choose the value of the x determinant (Dx) in the system.
3x – 7y = 11
2x + 5y = –4

Possible answers:

1
29
27
83

Answer 1

how does your cramer rule look?

Answer 2

3 11
2 -4

is the matrix for Dx right?

Answer 3

or do we use the y parts for Dx?

-7 11
5 -4

???

Answer 4

Dx

Answer 5

first equal the value of 'x' in both of the equation as\[2(3x-7y)=(11)2\]\[3(2x+5y)=(-4)3\]\[\implies 6x-14y=22\]\[6x+15y=-12\]now change the signs in both of the equation