Solve system of linear equations, using matrix method,
`2x+y+z=1" "``x-2y-z=3/2" "``3y-5z=9`

Explanation

To solve the system of linear equations using the matrix method, we will follow these steps:

### Step 1: Write the equations in standard form
The given equations are:
1. \( 2x + y + z = 1 \)
2. \( x - 2y - z = \frac{3}{2} \)
3. \( 3y - 5z = 9 \)

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