Use an elementary row operation to find the missing number in the second matrix.
| 1 2 -1 |
| 2 -2 3 | ,
| 1 2 -1 |
|-1 -8 x |
The missing x number/answer is 6, but how do I get to that answer.
bellerum23 wrote:Use an elementary row operation to find the missing number in the second matrix.
| 1 2 -1 |
| 2 -2 3 | ,
| 1 2 -1 |
|-1 -8 x |
| 1 2 -1|
|-1 -8 x|