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Find x, if [[x,-5,-1]][[1, 0 ,2 ],[0,2, ...

Find x, if `[[x,-5,-1]][[1, 0 ,2 ],[0,2, 1 ],[2 ,0 ,3]][[x],[4] ,[1]]=O`.

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To solve the equation given in the problem, we need to perform matrix multiplication step by step. Let's break it down: ### Step 1: Define the matrices We have three matrices: 1. \( A = \begin{bmatrix} x & -5 & -1 \end{bmatrix} \) 2. \( B = \begin{bmatrix} 1 & 0 & 2 \\ 0 & 2 & 1 \\ 2 & 0 & 3 \end{bmatrix} \) 3. \( C = \begin{bmatrix} x \\ 4 \\ 1 \end{bmatrix} \) ...
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