Question

Write the augmented matrix corresponding to the system of equation.
2a-3b+c=1
-a+b-4c=3
3a-b=2

Answer 1

just add a 3x3 array of zeroes on the right

Answer 2

+2 -3 +1 +1
-1 +1 -4 +3
+3 -1 +0 +2

I assume this is from

|+2 -3 +1| |a| +1
|-1 +1 -4| |b|=+3
|+3 -1 +0| |c| +2
solve for a b and c
google gauss jordan

Answer 3

Yes, Steve's method gives you the inverse matrix as well as the solution

Answer 4

sorry, put 1 on the diagonal, zeros off, to get inverse.