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(1 point) Convert the system

```
-2x_(1)+x_(2)=-1
-3x_(1)+4x_(2)=-9
x_(1)-x_(2)=2
```

to an augmented matrix. Then reduce the system to echelon form and determine if the system is consistent. If the system in consistent, then find all solutions. Augmented matrix: Echelon form: Is the system consistent? Solution:

`(x_(1),x_(2))=([◻,],[s_(1),,s_(1)])`

Help: To enter a matrix use . For example, to enter the

`2\times 3`

matrix

`[[1,2,3],[6,5,4]]`

you would type

`[[1,2,3],[6,5,4]]`

, so each inside set of [ ] represents a row. If there is no free variable in the solution, then type 0 in each of the answer blanks directly before each

`s_(1)`

. For example, if the answer is

`(x_(1),x_(2))=(5,-2)`

, then you would enter

`(5+0s_(1),-2+0s_(1))`

. If the system is inconsistent, you do not have to type anything in the "Solution" answer blanks.