हल करना det [[12, 5], [7k - 5, 0]] | Equatix - Math Solver

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Example

3(r+2s)=2t-4

a⋅(b-2)=3b

3(r+2s)=2t-4

a⋅(b-2)=3b

Question

$$|\begin{matrix}12&5\\ 7k-5\end{matrix}|$$