Hello, Lane!

Here's some help . . .

. .1) What is the augmented matrix for: .

. .2) Perform the row operation on the matrix: .

. . Multiply by

. .3) Perform the sequence of row operations on: .

A: swap and

B: replace by plus times

C: replace by plus times

. .

. .

4) If possible, solve the system of equation using Gaussian elimination with back-substitution.

. .

The determinant is . . . I expect averymessy elimination.

I'll let someone else work on it . . .

5) If possible solve the system of equation using an inverse matrix.

. .

Not possible . . . the determinant is .