Example

3(r+2s)=2t-4
a⋅(b-2)=3b
3(r+2s)=2t-4
a⋅(b-2)=3b

Question

$$|\begin{matrix}1&-4&-1\\ 2&-5&2\\ -3&2&1\end{matrix}|=$$

Answer

e*d*t[[1,-4,-1],[2,-5,2],[-3,2,1]]

Solution


Regroup terms.
e*d*t\(\(1,-4,-1\\),\(-3,2,1\)]
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