Questions: 3x + 3y + 12z = 9 3x + 2y + 10z = 6 2x + 4y + 17z = 7


3x + 3y + 12z = 9
3x + 2y + 10z = 6
2x + 4y + 17z = 7
Transcript text: \[ \begin{array}{l} \left\{\begin{array}{l} 3 x+3 y+12 z=9 \\ 3 x+2 y+10 z=6 \\ 2 x+4 y+17 z=7 \end{array}\right. \end{array} \]
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Solution

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Solution Steps

To solve the given system of linear equations, we can use matrix operations. Specifically, we can represent the system as a matrix equation \(AX = B\) and solve for \(X\) using matrix inversion or other suitable methods.

Solution Approach
  1. Represent the system of equations in matrix form \(AX = B\).
  2. Use a suitable method (e.g., numpy's linalg.solve) to solve for \(X\).
Step 1: Represent the System of Equations

The given system of equations can be represented as follows: \[ \begin{align_} 3x + 3y + 12z &= 9 \quad (1) \\ 3x + 2y + 10z &= 6 \quad (2) \\ 2x + 4y + 17z &= 7 \quad (3) \end{align_} \]

Step 2: Formulate the Matrix Equation

We can express the system in matrix form \(AX = B\), where: \[ A = \begin{bmatrix} 3 & 3 & 12 \\ 3 & 2 & 10 \\ 2 & 4 & 17 \end{bmatrix}, \quad X = \begin{bmatrix} x \\ y \\ z \end{bmatrix}, \quad B = \begin{bmatrix} 9 \\ 6 \\ 7 \end{bmatrix} \]

Step 3: Solve for the Variables

By solving the matrix equation, we find: \[ X = \begin{bmatrix} 2 \\ 5 \\ -1 \end{bmatrix} \] This implies: \[ x = 2, \quad y = 5, \quad z = -1 \]

Final Answer

The solution to the system of equations is: \[ \boxed{x = 2, \, y = 5, \, z = -1} \]

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