Under what conditions will these matrices be equal? $\left(\begin{array}{cc}a & -1 \ 2 & b\end{array}\right)$ and $\left(\begin{array}{cc}-3 & c \ d & 4\end{array}\right)$

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The Answer of Under what conditions will these matrices be equal? $\left(\begin{array}{cc}a & -1 \ 2 & b\end{array}\right)$ and $\left(\begin{array}{cc}-3 & c \ d & 4\end{array}\right)$

Under What Conditions Will These Matrices Be Equal (a−12b)\left(\begin{array}{cc}a & -1 \\ 2 & b\end{array}\right)(a2​−1b​)

Under What Conditions Will These Matrices Be Equal $\left(\begin{array}{cc}a & -1 \\ 2 & b\end{array}\right)$