What element is a location a_23 of matrix A, if

Question

|4 -3 4|
5 0 -6
7 2 -8

I have the answer at -6
Is this correct?

Answer 1

yes

Answer 2

Solve for x
Matrix

(5x-8 1 = (2 1
3 4m-1) 3 7m +6)

How do I do this?

Answer 3

Solution of the determinant? Matrix
|1 7
0 3|

How do I do this?

Answer 4

1)Solve the system
5x-8=2
4m-1=7m+6

2)Determinant=1*3-0*7

Answer 5

answer
1. ?
2. 3

Answer 6

1.
5x = 10 so x = 2
2. 3 is correct