Respuesta :

Estellia

Answer:

-4

Step-by-step explanation:

[tex]\begin{pmatrix}a&3\end{pmatrix}=\begin{pmatrix}-4&3\end{pmatrix}[/tex]

If the second term is equal, 3 = 3 and the whole matrices are equal,

that means the first terms are equal.

Hence, [tex]a=-4[/tex]

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