Question

How do you set up and solve the following system using augmented matrices `2x+3y+4z=20, 3x+4y+2z=17, 3x+2y+3z=16`?

Answer 1

`x=1,y=2` & `z=3`

Explanation:

Steps :
1. Find determinant |A|
2. Find Adjoint A
3. Find `(A^-1)` using formula `A^-1=(1/|A|)(Adj. A)`
4. Find x, y, z.