Problem

$\left\{\begin{array}{c}2 x+y+3 z=13 \\ x+2 y=11 \\ 3 x+z=10\end{array}\right.$

Solution

Step 1 :We are given the system of linear equations: \[\begin{cases} 2x + y + 3z = 13 \\ x + 2y = 11 \\ 3x + z = 10 \end{cases}\]

Step 2 :We can represent this system in matrix form as: \[\begin{bmatrix} 2 & 1 & 3 \\ 1 & 2 & 0 \\ 3 & 0 & 1 \end{bmatrix} \begin{bmatrix} x \\ y \\ z \end{bmatrix} = \begin{bmatrix} 13 \\ 11 \\ 10 \end{bmatrix}\]

Step 3 :By solving this matrix equation, we find the solution to be: \[\begin{bmatrix} x \\ y \\ z \end{bmatrix} = \begin{bmatrix} 3 \\ 4 \\ 1 \end{bmatrix}\]

Step 4 :So, the solution to the system of equations is \(x = 3\), \(y = 4\), and \(z = 1\).

Step 5 :Final Answer: \(\boxed{x = 3, y = 4, z = 1}\)

From Solvely APP
Source: https://solvelyapp.com/problems/41018/

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